Siman 110 — What Does Not Nullify (Davar Chashuv), the Fixed (Kavua), the Majority (Rov) and the Double Doubt (Safek Safeka) — Practical psika
סימן ק״י · הלכה למעשה
דין דבר חשוב, קבוע, רוב וספק ספיקא
פסק המחבר והרמ״א · הכרעת נושאי הכלים · פסיקת הספרדים והאשכנזים בזמננו
⚖️ פסק הלכה ולמעשה ⚖️
✦ ❖ ✦
Halakha le-ma'asse — the practical psika
From the ruling of the Mehaber and the Rama, to the arbitration of the Shach, the Taz, the Pri Megadim
and the Pitchei Teshuva, all the way to the contemporary Sephardic and Ashkenazi poskim
Subject:
שולחן ערוך יורה דעה סימן ק״י (10 סעיפים)
עם נושאי הכלים: ש״ך, ט״ז, פרי מגדים, פתחי תשובה
⚠ Level disclaimer:
This level is not "Da'at HaRav": the Shulchan Aruch HaRav
(the Admur HaZaken) does not cover Yoreh De'ah, hence not Siman 110.
It is a level of practical psika: what one does, and whom to ask.
Writing and iyun:
הרב יוסף חיים סממה · DAAT
How to read this level. Every statement is anchored either in the text of the Shulchan Aruch and its nossei kelim (Shach, Taz, Pri Megadim, Pitchei Teshuva), or in a named responsum of the contemporary poskim. On Yoreh De'ah there is neither a Mishnah Berurah (which comments only on Orach Chaim), nor a Shulchan Aruch HaRav / Da'at HaRav (the Admur HaZaken did not write the YD). Every concrete application (le-ma'asse) concludes with the referral to your Rav: real cases of doubt blend factual details (what fell, where, is it sold by count, is the prohibition in its place or detached, how many doubts and which) that only a posek who sees your situation can decide.
📑 תוכן העניינים
שורש הסימן — דין הספק, ושלוש מידות: דבר חשוב, קבוע, רוב (סעיף א')
פסק המחבר והרמ״א — מסגרת ההלכה ב-10 סעיפים
דבר חשוב ודבר שבמנין — אינו בטל, ודרבנן ספיקו לקולא (סעיף א'–ב')
כל קבוע כמחצה על מחצה — תשע חנויות וכל דפריש מרובא פריש (סעיף ג'–ד')
The davar chashuv. An important object forbids in its kind in any amount, and these are seven things: Perekh nuts, Badan pomegranates, sealed barrels, beet stalks, cabbage stumps, the Greek gourd, and a householder's loaves. Likewise living animals are important and do not nullify. But other things, even though one customarily counts them, nullify in their measure [60].
The foundation. Siman 110 is the siman that founds the laws of doubt in kashrut. Its title: דין ספק טריפות שאירע בבשר, "the law of a doubt of טריפה that arose in meat." The whole siman articulates three measures and one exit: the davar chashuv (an important object that does not nullify, even in a thousand), the kavua (the prohibition fixed in its place, treated as 50/50), the rov (the majority that nullifies what has detached), and the safek safeka (the double doubt that permits where a single doubt does not).
The davar chashuv is only de-rabbanan (Taz s.k. 1; Rama). That an important object does not nullify is not a Torah prohibition but a rabbinic enactment (de-rabbanan) — by Torah law it would nullify in the majority. A major practical consequence: when one doubts whether it is a davar chashuv, one is lenient (אזלינן בספיקו לקולא). The Taz illustrates with the machloket R. Yochanan / Resh Lakish and with the egg found among forbidden eggs: its leniency stems from the rule being de-rabbanan.
Why "davar chashuv is forbidden in benefit" (Shach s.k. 2)
The Shach notes a weighty point le-ma'asse: a davar chashuv that is also forbidden in benefit (assur be-hana'ah) does not nullify even in a thousand as to the benefit itself — one cannot sell the mixture to a non-Jew as if it nullified. For ordinary prohibitions (forbidden in consumption only), one may sell the mixture to a non-Jew minus the value of the prohibition. This issur achilah / issur hana'ah distinction governs the practice of mixtures containing a davar chashuv.
2. פסק המחבר והרמ״א — the map of the siman
Siman 110 contains 10 seifim. The Mehaber lays the framework (davar chashuv, kavua, rov, mekulin, parish, safek safeka); the Rama (הגה) glosses, and above all establishes two things: that any davar shebeminyan does not nullify (and the doubt remains lenient, being de-rabbanan), and that where the prohibition is in its place, a mere mixture is not a second doubt (the limit of the safek safeka). Here is the overall map, as it emerges from the text itself.
Seif
Subject
Psak (anchored in the text)
1
davar chashuv — the 7 things, living animals
Important object → does not nullify בכל שהוא (7 things; living animals). Others → nullify in their measure. Rama: any davar shebeminyan does not nullify, and so is the custom; but it is de-rabbanan → אזלינן בספיקו לקולא. Importance is local and temporal.
2
living animals slaughtered → nullify
Living animals mixed in then slaughtered → their importance lapses, they nullify — provided they were slaughtered בשוגג, and only small animals not ראויים להתכבד.
3
kavua — nine shops
9 kosher shops, 1 of נבילה; took from one without knowing which → forbidden (כל קבוע כמחצה על מחצה). Meat found in the market / in a non-Jew's hand → permitted (כל דפריש מרובא פריש). But בשר שנתעלם מן העין is forbidden de-rabbanan (siman 63). Rama: כל דפריש only שלא לפנינו; פירש לפנינו → still kavua.
4
majority + mixture = safek safeka
Majority of kosher shops, minority נבילה; took from one then it mixed without recognition → nullified in the majority by safek safeka. Rama: יש אוסרים, since the prohibition was בקבוע (first doubt forbidden by Torah) → no real second doubt, only a mixture; and so is the custom.
5
mekulin — before / after
Took from the מקולין (slaughter-stall), even a חתיכה הראויה להתכבד, then a טריפה is found there: all that was taken before the discovery → permitted (כל דפריש, the doubt arose only after). Taking from now on → forbidden, for not all are experts.
6
parish be-mitkavein / mimela; the egg
Non-nullifying objects mixed; one detaches after the mixture is known: be-mitkavein → forbidden (גזירה שמא יקח מן הקבוע); mimela → permitted. Rama: forbidden only if one detached only part; all detached together → permitted except the last two. Egg of a טריפה hen → permitted (follow the majority).
7
one eaten / fallen into the sea
Non-nullifying mixture, one of which was eaten בשוגג or lost (sea) → the rest permitted ("the prohibition went off"). Eat the remainder two by two (ממה נפשך), not one by one. Rama: a single person does not eat all; even two people not all at once.
8
two / three mixtures (dilution)
Non-nullifying mixed, one fell into two, of the three one fell into two → permitted (the one of the 1st mixture nullifies in the majority). Into a thousand → all forbidden; we say "nullified" only to permit its safek safeka. Rama: a person not all; only if a definite prohibition; דשיל״מ is not permitted by ס״ס.
9
ספק טריפה mixed — the doubt be-gufo
ספק טריפה mixed → all forbidden until 60 (if nullifiable), for the 1st doubt is בגופו → no safek safeka. Rama: but two doubts on the very existence of the prohibition, known together → ס״ס permits everywhere, even דאורייתא, even בחזקת איסור, even if one can verify (siman 53).
10
טריפה lung among kosher ones
A טריפה lung (a known סירכא) mixed by error among kosher lungs, without confusion (ערבוביא) among the lambs → the lambs are permitted.
כלל הפסק של הסימן :
שלוש מידות חותכות את הסימן — דבר חשוב (אינו בטל, ודרבנן הוא → ספיקו לקולא), קבוע (כמחצה על מחצה, ולעומתו כל דפריש מרובא פריש), וספק ספיקא (שני ספקות עצמאיים מתירים, ואינם מצטרפים כשהראשון בגופו או בקבוע). וכל הסימן הוא דין הספק : מאיזה רוב, מאימתי פירש, וכמה ספקות יש לפנינו.
3. דבר חשוב ודבר שבמנין — what does not nullify
דבר חשוב אוסר במינו בכל שהוא... וכן בעלי חיים חשובים הם ואינם בטלים. הגה: ויש אומרים דכל דבר שבמנין אינו בטל, וכן נוהגין. ומה שאינו בטל אינו אלא מדרבנן, לכן בספיקא אזלינן לקולא.
— שולחן ערוך יו״ד ק״י:א והגה
The Mehaber and the Rama. For the Mehaber, only the 7 listed things (and living animals) are a davar chashuv that never nullifies; other things, even sold by count, nullify in their measure (60). The Rama (הגה) rules more broadly: any davar shebeminyan — anything always sold by the piece / by count — does not nullify, and so is the custom. This is the first practical rule of the siman.
But it is de-rabbanan → sefeko le-kula (Rama; Taz s.k. 1; Shach s.k. 9-10). The Rama at once adds the lenient key: that a davar chashuv does not nullify is only de-rabbanan; by Torah law it nullifies in the majority. So if one doubts whether the object is truly a davar chashuv (or a davar shebeminyan), one is lenient (ספק דבר חשוב לקולא, Shach s.k. 10). Moreover the importance is local and temporal: Perekh nuts and Badan pomegranates forbade בכל שהוא in Eretz Israel in those eras, and whatever is important "for the people of a place and time" takes that status there.
The egg among forbidden eggs — leniency in hefsed merubeh
Pitchei Teshuva (s.k. 1): in the name of the Minchat Yaakov (citing the Taz), an egg counted among forbidden ones is lenient in hefsed merubeh (significant loss) — precisely because the whole davar shebeminyan is only a chumra de-rabbanan.
Opposing view: the Teshuva Me'ahava holds that the egg never nullifies, even in significant loss. A machloket to know, not to decide alone.
Slaughtered animals (seif 2; Taz s.k. 2): the animal's importance exists only while alive; slaughtered בשוגג (and only a small animal, not ראוי להתכבד), it nullifies. The Taz stresses that the importance of the living animal is not that of a חתיכה הראויה להתכבד (siman 101).
Le-ma'asse (davar chashuv). Remember: an object sold by count / by the piece (davar shebeminyan) does not nullify even in a thousand — so a non-kosher product identified among identical ones is not "drowned" by the majority. But since the rule is de-rabbanan: if you doubt that it is truly a davar shebeminyan, or if it is a significant loss (hefsed merubeh), there is room for leniency — and that passes through your Rav. Knowing whether a given product is today a "davar shebeminyan," and whether the loss is "merubeh," is a matter of assessment. For the application to your situation, consult your Rav.
4. כל קבוע כמחצה על מחצה — the fixed and the majority
תשע חנויות מוכרות בשר שחוטה ואחת מוכרת נבילה, ולקח מאחת מהן ואינו יודע מאיזה מהן לקח — אסור, דכל קבוע כמחצה על מחצה דמי. ובשר הנמצא בשוק או ביד עובד כוכבים — מותר, דכל דפריש מרובא פריש.
— שולחן ערוך יו״ד ק״י:ג
Situation
Rule
Status
Source
Took from one of the 9 shops (not knowing which)
כל קבוע כמחצה על מחצה
Forbidden (treated as 50/50, the majority does not nullify the kavua)
Mehaber s.3
Meat found in the market / in the non-Jew's hand
כל דפריש מרובא פריש (שלא לפנינו)
Permitted (follows the majority of shops) — Torah law
Mehaber s.3
Detached before us (פירש לפנינו) / one sees the non-Jew take it
Like taken from there by hand
Forbidden (= kavua)
Rama s.3 (siman 63)
Meat that vanished from sight (נתעלם מן העין)
Rabbinic stringency
Forbidden de-rabbanan though all are Jewish
Mehaber s.3; Rama (siman 63)
The source of kol kavua (Shach s.k. 15). The Shach refers to the talmudic foundation (Bava Kama, on "וְאָרַב לוֹ וְקָם"): when the prohibition is in its fixed place (kavua), one does not say "go to the majority," but treats it as 50/50 — like a doubt of נפשות. The majority (rov) works only for what has detached (parish) and only שלא לפנינו (not before us).
Majority of shops or majority of meat? (Pitchei Teshuva s.k. 2, Beit Efraim). The Pitchei Teshuva reports the question of the Beit Efraim: when one follows the majority (kol de-parish), does one follow the majority of shops (how many kosher stalls) or the majority of meat (how much kosher meat is in the market)? A major practical question once a single large non-kosher shop outweighs several small kosher ones — not to decide alone.
Majority of shops + mixture (seif 4) — a real safek safeka?
Mehaber (seif 4): majority of kosher shops, one takes from one, then it mixes into other pieces without recognition → nullified in the majority, by safek safeka (doubt of which shop + doubt of which piece).
Rama (seif 4) — יש אוסרים, and so is the custom: one forbids in such a case. Why? Because the prohibition was in its place (be-kavua) and the first doubt is forbidden by Torah; there is therefore no second permitting doubt here, only a mixture — which is not called safek safeka. This is one of the two great limits of the double doubt (the other being the doubt be-gufo, seif 9).
Le-ma'asse (kavua / rov). As long as the prohibition is in its place (e.g. an identified non-kosher package within a lot of identical packages), one reasons as 50/50 — the majority does not save. Once the thing has detached and left sight (parish shelo le-faneinu), one follows the majority. But by our custom (Rama, seif 4), a mixture occurring on a prohibition that was be-kavua does not create a permitting safek safeka. Distinguishing "in its place / detached," "before us / not before us," and counting the majority (shops or meat) are questions of fact. For the application to your situation, consult your Rav.
הלוקח בשר מן המקולין, אפילו חתיכה הראויה להתכבד, ונמצאת טריפה במקולין... כל מה שלקח קודם שנמצאת הטריפה — מותר ; אבל ליקח מכאן ואילך — אסור, שאין הכל בקיאין.
— שולחן ערוך יו״ד ק״י:ה
Mekulin — before / after (seif 5; Taz s.k. 3-7). One who took meat from the מקולין (slaughter-stall / butcher's), even a חתיכה הראויה להתכבד, then a טריפה is found there (without identifying the טריפה pieces nor which he took from): all that was taken before the discovery is permitted — the doubt arose only after the piece detached, so one follows the kosher majority (kol de-parish). But taking from now on is forbidden, even a piece not fit to be served, for not all are experts (she-ein ha-kol beki'in) and would confuse fit / unfit.
Parish be-mitkavein vs mimela (seif 6; Shach s.k. 33-37)
Mehaber (seif 6):important objects (living animals, etc.) mixed into permitted ones, which do not nullify even in a thousand: if one detaches from the majority after the mixture is known → forbidden — and only if detached intentionally (be-mitkavein); if it detached by itself (mimela) → permitted.
The gezeirah (Shach s.k. 33-37): machloket Rashba (permits mimela) / Rosh (forbids too: shema yikach min ha-kavua). One forbids be-mitkavein out of fear he will also take from the fixed.
Rama (seif 6): the be-mitkavein prohibition holds only if he detached part and prohibitions remain in their place; but if all detached together (nitpazru kulan be-faneinu = like shelo be-faneinu, Shach), those that detached are permitted, except the last two which remain forbidden.
The egg of the טריפה hen (seif 6): a טריפה hen mixed into kosher ones, and an egg is found among them → the egg is permitted — though the hens are important and do not nullify, one follows the majority for the egg (which is not the important object itself).
Pitchei Teshuva (s.k. 4-5): practical cases of kavua / mekulin in the name of the Maharit and the Tiferet Tzvi — defining "before / after the discovery" and "detached before us or not" is the decisive issue. To study, not to decide alone.
Le-ma'asse (mekulin / parish). What you bought before a defect was discovered at a vendor follows the majority (often permitted); what you take after the discovery is forbidden. An important object that detaches from a known mixture: permitted only if it detached by itself (or if all scattered together, except the last two), forbidden if removed on purpose. Establishing "before / after," "by itself / on purpose," is a question of fact. For the application to your situation, consult your Rav.
6. נאכל או נפל לים — one eaten, one lost
דבר שאינו בטל מחמת חשיבותו שנתערב באחרים, ונאכל אחד מהם בשוגג... או נפל אחד מהם לים ואבד מן העולם — כולם מותרים, שאנו תולין לומר האיסור הלך לו. ולא יאכל השאר אלא שניים שניים, ביחד.
— שולחן ערוך יו״ד ק״י:ז
"The prohibition went off" (seif 7; Shach s.k. 44). A thing that does not nullify by its importance (בעלי חיים, בריה, חתיכה הראויה להתכבד, דבר שיש לו מתירין) mixed into others, of which one was eaten inadvertently (בשוגג) — whether he ate it himself or others ate it בשוגג — or one fell into the sea to the point of being lost from the world → all the others are permitted, for we attribute [by saying] "it is the prohibition that went off." The Shach (s.k. 44) stresses "lost from the world": otherwise the prohibition is still present in the majority (issura be-ruba ita) and nothing is permitted.
Two by two, not one by one (seif 7; Shach s.k. 47-49; Taz s.k. 8-9). One eats the remainder only by taking them two by two: ממה נפשך there is necessarily one permitted in each pair. Eating them one by one is forbidden (one might eat just the prohibition). Rama: even two by two, a single person may not eat all of them; and even two people should not eat them all at once (cf. siman 140). The Taz discusses the Beit Yossef's view on the "two by two" mechanism.
Le-ma'asse (eaten / fallen into the sea). If, in a mixture of non-nullifying objects, one was actually consumed inadvertently or definitively lost, one may say "the prohibition is gone" and permit the rest — but by eating two by two, never one by one, and without a single person (or a single group at once) finishing all. "Lost from the world" must be real, not mere distancing. Assessing all this — for the application to your situation, consult your Rav.
7. שתי ושלוש תערובות — the safek safeka of dilution
דבר שאינו בטל מחמת חשיבותו שנתערב באחרים, ונפל אחד מן התערובת לתוך שניים אחרים, ומן השלושה נפל אחד לתוך שניים אחרים — האחרונים מותרים. אבל אם נפל מן התערובת הראשונה לתוך אלף — כולם אסורים.
— שולחן ערוך יו״ד ק״י:ח
The dilution that creates a safek safeka (seif 8; Taz s.k. 10-15). A non-nullifying object mixed into others: if one of the mixture falls into two others, then one of these three falls into two others → the latter are permitted (the one of the first mixture nullifies in the majority of the second). But if one of the first mixture falls into a thousand at once → all forbidden; we say "nullified in the majority" only to permit its safek safeka: namely that if one of the second mixture falls elsewhere, it does not forbid.
Definite prohibition (3 mixtures) or safek (2 mixtures)? — and the davar she-yesh lo matirin
Rama (seif 8): nevertheless a single person shall not eat all; and the three-mixtures rule holds only for a definite prohibition mixed in. For a safek prohibition mixed in, of which one fell elsewhere → the second mixture is already permitted (one fewer doubt to offset).
Davar she-yesh lo matirin (Rama seif 8; Pitchei Teshuva s.k. 11):יש אומרים that a דשיל״מ is not permitted by safek safeka; and it is good to be strict except in pressing need, since it has a heter anyway. The Pitchei Teshuva (s.k. 11) specifies in the name of the Tzla"ch / Noda BiYhuda: even a דשיל״מ de-rabbanan, its safek is forbidden — except if it had a chezkat heter.
Le-ma'asse (two / three mixtures). The successive dilution of one mixture into another can engender a safek safeka that ultimately permits — three mixtures for a definite prohibition, two for a safek prohibition. But a person does not eat all, and a davar she-yesh lo matirin (e.g. a food that will be permitted anyway after Shabbat / Yom Tov) is not permitted by this double doubt. Reconstructing the exact chain of mixtures is a question of fact. For the application to your situation, consult your Rav.
8. כללי ספק ספיקא — the rules of the double doubt
ספק טריפה שנתערב באחרים — כולם אסורים עד שיהיה בהיתר כדי לבטל האיסור (אם הוא מדברים הבטלים), לפי שהספק הראשון היה בגופו. הגה: אבל אם היו שני ספקות בעצם האיסור ונודעו ביחד — ספק ספיקא מותר אפילו באיסור דאורייתא ובגופו, ואפילו באיתחזק איסורא.
— שולחן ערוך יו״ד ק״י:ט והגה
The doubt be-gufo is not saved by safek safeka (seif 9). A ספק טריפה mixed into others → all forbidden until there is enough permitted to nullify the prohibition (if it is among nullifiable things), for the first doubt was in its body (be-gufo). Reason (Rama, יש אומרים): the doubt is itself a Torah prohibition (דאורייתא), and one cannot say of another doubt "there is no prohibition" — only "it mixed in"; this mixture is not called safek safeka. This is the second great limit of the double doubt (along with the doubt be-kavua, seif 4).
הכרעה — when the safek safeka permits (Rama seif 9; Shach s.k. 63-66; Pitchei Teshuva s.k. 13-15). If, on the other hand, there were two doubts on the very existence of the prohibition, and they were known together, the safek safeka permits everywhere — even a Torah (דאורייתא) prohibition, even be-gufo, and even with chezkat issur. The Rama's example: a bird (under a presumption of prohibition) whose wing broke or dislocated, doubt before or after the slaughter, and if before, perhaps the lung is not perforated — one permits by safek safeka, even though it is possible to verify (the lung) — no concern (see siman 53).
The formal rules of the ס״ס (Shach s.k. 63). The Shach lays down the conditions for a valid double doubt: (1) one needs a single body / one matter (not two distinct bodies, not a doubt be-gufo followed by a mere mixture); (2) the two doubts must be known together (nod'u be-yachad), independent and each permitting; (3) one does not combine an already-decided doubt. The Pitchei Teshuva (s.k. 13-15) reports the machloket on safek de-rabbanan + ס״ס and on chezkat issur: the Shaar HaMelech and the Pri Chadash (s.k. 15) hold that be-itchazek issura one does not say "safek de-rabbanan le-kula" — against the Shach who permits. Not to decide alone.
Seif 10 — the טריפה lung among kosher ones. A טריפה lung (whose סירכא the inspector recognized) that mixed by error among kosher lungs, without confusion (ערבוביא) among the lambs → the lambs are permitted (each lamb keeps its identity; only the detached lung is in doubt).
Le-ma'asse (safek safeka). A double doubt permits — but only real doubts: two independent doubts, on the very existence of the prohibition, known together, a single body, one matter. A doubt be-gufo (in the body: is this piece טריפה?) or a prohibition be-kavua does not combine with a mere mixture doubt. The presence of a chezkat issur, the דאורייתא/דרבנן stakes, and the possibility of verifying further complicate the count. Identifying "how many doubts, which, known when" is the very art of this siman. For the application to your situation, consult your Rav.
9. פסיקת הספרדים בזמננו — the contemporary Sephardic psika
Method note. The responsa that follow (Yabia Omer, Yechaveh Daat, Yalkut Yossef, Or LeTzion) extend the principles of siman 110 above to modern cases. They are not in the siman's corpus; they are cited as recognized currents of psika, to be confirmed with a Rav before any application.
The contemporary Sephardic psika (school of Rav Ovadia Yossef, Rav Ben-Tzion Abba Shaul) departs precisely from the framework of the Mehaber and the Rama: davar chashuv / davar shebeminyan does not nullify, but since it is de-rabbanan, one makes broad use of ספק דבר חשוב לקולא and of leniency in hefsed merubeh (cf. the egg, Pitchei Teshuva s.k. 1). On the safek safeka, Rav Ovadia's school is known for its extended use of the double doubt (and of ספק ספיקא + רוב, ספק ספיקא + ספק דרבנן) to permit in pressing cases — always within the Shach's formal conditions (s.k. 63).
Concrete case
Sephardic orientation (to verify)
A non-kosher "by count" product among identical ones
Davar shebeminyan does not nullify; but if one doubts the status, or in hefsed merubeh → room for leniency (de-rabbanan, sefeko le-kula).
Meat from a vendor where one lot proved non-kosher
Before the discovery (kol de-parish) → often permitted; from now on → forbidden (mekulin). Majority of shops / majority of meat to examine (Beit Efraim).
A double doubt in the kitchen
ס״ס used broadly if both doubts are real and known together (Shach s.k. 63); not if be-gufo / be-kavua.
Davar she-yesh lo matirin
One is strict: ס״ס does not permit it, except chezkat heter or pressing need (PT s.k. 11).
Anchoring in the siman. All this flows from the text: davar chashuv de-rabbanan → sefeko le-kula (seif 1, Rama), kol kavua / kol de-parish (seif 3), the limits of the safek safeka (seifim 4 and 9), the davar she-yesh lo matirin not permitted by ס״ס (seif 8). The contemporary responsa apply these rules to today's products and kitchens.
10. פסיקת האשכנזים — the Ashkenazi psika
Method note. Same remark: these currents extend the Rama and the nossei kelim; they are cited as markers of psika, to be confirmed with a Rav.
The Ashkenazi psika departs from the Rama and the acharonim (Pri Megadim, Chochmat Adam, Aruch HaShulchan YD). Two traits of the Rama dominate this siman: (1) "and so is the custom" on the davar shebeminyan that does not nullify (with sefeko le-kula since it is de-rabbanan); (2) "and so is the custom" on the limit of the safek safeka: a mixture occurring on a prohibition be-kavua (seif 4) or a doubt be-gufo (seif 9) is not a real double doubt.
Concrete case
Ashkenazi orientation (to verify)
Davar shebeminyan
Does not nullify even in a thousand (Rama); but safek davar chashuv le-kula since de-rabbanan.
One forbids (Rama: no real ס״ס when the 1st doubt is be-kavua / דאורייתא).
Valid safek safeka
Two real doubts known together → permits, even דאורייתא, even be-chezkat issur (Shach s.k. 63-66).
Chabad — only through real sources. The Shulchan Aruch HaRav does not cover Yoreh De'ah; there is therefore no "Da'at HaRav" on siman 110. For Chabad practice on these questions, one refers to the responsa of the Tzemach Tzedek and to the Sefer HaMinhagim Chabad when they explicitly address a point — and one refrains from attributing to the Admur HaZaken a ruling he did not write here.
11. מקרים מודרניים — today's kitchen
How siman 110 illuminates the kitchen. Four tools of the siman serve to decide the modern cases: (1) the davar chashuv / davar shebeminyan that does not nullify, but de-rabbanan → sefeko le-kula (seif 1); (2) kol kavua / kol de-parish (seifim 3-5); (3) parish be-mitkavein / mimela (seif 6); (4) the rules of the safek safeka and its limits (seifim 4, 8, 9).
Modern case
Tool of the siman
Orientation (to confirm with the Rav)
A non-kosher product under sealed packaging, identified among identical packages
Seif 1 (davar shebeminyan / chavit setumah)
Sold by count / sealed → does not nullify even in a thousand (it remains "in its place"). But if one doubts the status, or in hefsed merubeh → room for leniency (de-rabbanan).
Meat bought from a vendor where one lot proved non-kosher
Seif 3-5 (kavua / mekulin)
Bought before the discovery and already gone → follows the majority (often permitted, kol de-parish); from now on → forbidden (mekulin). "Before us" → still kavua.
A double doubt in the kitchen (e.g.: is this product really forbidden, and which lot is it from?)
Seif 4, 9 (safek safeka)
Permitted if two real doubts, independent, known together; not if the 1st doubt is be-gufo or the prohibition was be-kavua.
A product bought then vanished (consumed / not found)
Seif 7 (eaten / fallen into the sea)
If truly consumed בשוגג or lost → "the prohibition is gone," the rest permitted, but two by two and not all by one person.
Live animals / fish bought in a lot, one suspect
Seif 1-2 (living animals)
Alive → do not nullify; slaughtered בשוגג (small, not ראויים להתכבד) → nullify.
Le-ma'asse. These situations blend questions of fact — is the object "sold by count," is the prohibition in its place or detached, before us or not, how many doubts and which, is the loss "merubeh" — that only your Rav can decide upon seeing the case. The practical rule: reconstruct precisely what fell, where, what its status is (count / loose), and how many doubts exist, then ask. For the application to your situation, consult your Rav.
12. סיכום מעשי — recap and tables
טבלה — the rules of doubt, in practice
Case
Measure (for us)
Note
davar chashuv / davar shebeminyan identified
Does not nullify even in a thousand
But de-rabbanan → sefeko le-kula; hefsed merubeh → leniency (the egg)
Prohibition in its place (kavua)
כמחצה על מחצה — the majority does not nullify
Source Bava Kama (Shach s.k. 15)
Detached shelo le-faneinu (parish)
כל דפריש מרובא פריש — majority
parish le-faneinu → still kavua (siman 63)
Mekulin: before / after the discovery
Before → permitted; after → forbidden
she-ein ha-kol beki'in (seif 5)
Important object detached from a known mixture
be-mitkavein → forbidden; mimela → permitted
All together → permitted except the last 2 (seif 6)
One eaten בשוגג / lost (sea)
The rest permitted, two by two
Not one by one; a person not all (seif 7)
Valid safek safeka
Permits, even דאורייתא / be-chezkat issur
2 real doubts known together; not be-gufo / be-kavua (seifim 4, 9)
Davar she-yesh lo matirin
Not permitted by ס״ס
Except chezkat heter / need (seif 8, PT s.k. 11)
טבלה — who says what (the siman's nossei kelim)
Posek
Decisive contribution (anchored in the corpus)
Mehaber (seifim 1-10)
davar chashuv (7 things, living animals); kol kavua ke-mechtsa / kol de-parish (nine shops); mekulin before/after; parish be-mitkavein/mimela; eaten/fallen into the sea, two by two; two/three mixtures; the doubt be-gufo (seif 9); lung among kosher ones (seif 10).
Rama (הגה)
Any davar shebeminyan does not nullify — so is the custom, but de-rabbanan → sefeko le-kula (seif 1); parish le-faneinu = kavua (seif 3); יש אוסרים the mixture on a kavua (seif 4); the last two forbidden, the egg permitted (seif 6); a person not all (seif 7); דשיל״מ not permitted by ס״ס (seif 8); two doubts known together → ס״ס even דאורייתא/be-gufo/be-chezkat issur (seif 9).
Shach (Siftei Kohen)
s.k. 2: davar chashuv assur be-hana'ah (sale minus the value of the prohibition); s.k. 9-10: davar shebeminyan a chumra, safek davar chashuv le-kula; s.k. 15: source of kol kavua (Bava Kama); s.k. 33-37: parish mimela, machloket Rashba/Rosh, nitpazru kulan be-faneinu; s.k. 44: "ne'evad min ha-olam"; s.k. 47-49: two by two, a person not all (siman 140); s.k. 52-59: the ס״ס, the דשיל״מ, the doubt be-gufo; s.k. 63-66: the rules of the ס״ס, chezkat issur + ס״ס.
Taz (Turei Zahav)
s.k. 1: davar shebeminyan (R. Yochanan / Resh Lakish, the egg, lenient be-hefsed since de-rabbanan); s.k. 2: only small animals, the importance of the living ≠ חהל״ה (siman 101); s.k. 3-7: kavua, nine shops, mekulin, parish, the gezeirah shema yikach min ha-kavua, kavua de-oraita / de-rabbanan; s.k. 8-9: eaten בשוגג, two by two; s.k. 10-15: the great analysis of the safek safeka; s.k. 16: reference to siman 53 (the nishmat, stringent).
Pri Megadim (פר״מ)
Refines the scope of the davar shebeminyan and the conditions of the safek safeka (a single body, one matter) in the wake of the Shach and the Taz.
Pitchei Teshuva (פתחי תשובה)
s.k. 1: egg lenient be-hefsed merubeh (Minchat Yaakov / Taz) vs Teshuva Me'ahava (never nullifies); s.k. 2: Beit Efraim — majority of shops or majority of meat; s.k. 4-5: Maharit, Tiferet Tzvi (kavua / mekulin); s.k. 11: דשיל״מ — its safek forbidden except chezkat heter (Tzla"ch, Noda BiYhuda); s.k. 13-15: rules of the ס״ס, safek de-rabbanan + chezkat issur (Shaar HaMelech, Pri Chadash).
טבלה — contemporary currents of psika (outside the corpus, to verify)
Sephardic: school of Rav Ovadia Yossef (Yabia Omer, Yechaveh Daat), Yalkut Yossef; Or LeTzion (Rav Ben-Tzion Abba Shaul). Extend the Mehaber and the Rama: davar shebeminyan does not nullify, but de-rabbanan → sefeko le-kula and leniency in hefsed merubeh; broad use of the safek safeka within the Shach's formal conditions.
Ashkenazi: acharonim (Pri Megadim, Chochmat Adam, Aruch HaShulchan YD). Extend the Rama: davar shebeminyan that does not nullify (sefeko le-kula), kavua = 50/50, the limits of the safek safeka (be-kavua / be-gufo).
Chabad: no Shulchan Aruch HaRav on the YD. One cites only real sources — responsa of the Tzemach Tzedek, Sefer HaMinhagim — when they explicitly treat the point.
On the substance, retain the three measures (davar chashuv, kavua / rov, safek safeka): this is the grid that resolves most cases of doubt.
The davar chashuv / davar shebeminyan does not nullify, but since it is de-rabbanan, the doubt remains lenient (sefeko le-kula, and hefsed merubeh for the egg).
The safek safeka permits — but only two real doubts known together; a doubt be-gufo or a prohibition be-kavua does not combine, and a davar she-yesh lo matirin is not permitted this way.
And for every real case — by count or loose, in its place or detached, before us or not, how many doubts — the practical halakha passes through your Rav. For the application to your situation, consult your Rav.
~ ~ ~ ~ ~ DAAT · הרב יוסף חיים סממה
תלמיד חכם · מעביר שיעורים בהלכה ובחסידות פסק והלכה למעשה בדין דבר חשוב, קבוע, רוב וספק ספיקא · סימן ק״י · ⚖️ Level 4 — Halakha le-ma'asse
⚠️ This content is for study purposes. The contemporary currents of psika cited (Sephardic and Ashkenazi) are markers, not a personal psak. For any practical application (לְמַעֲשֶׂה), consult a qualified Rav.