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DAAT · LEVEL 4 — HALAKHA LE-MA'ASSE / PSAK

שולחן ערוך · יורה דעה

Siman 116 — Prohibitions Due to Danger (סכנה) — Practical psika

סימן קט״ז · הלכה למעשה

דברים האסורים משום גילוי וסכנה

פסק המחבר והרמ״א · הכרעת נושאי הכלים · פסיקת הספרדים והאשכנזים בזמננו

⚖️ פסק הלכה ולמעשה ⚖️

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Halakha le-ma'asse — the practical psika

From the ruling of the Mehaber and the Rama, to the arbitration of the Taz, the Shach
and the Pitchei Teshuva, all the way to the contemporary Sephardic and Ashkenazi poskim

Subject:
שולחן ערוך יורה דעה סימן קט״ז (ז' סעיפים)
עם נושאי הכלים: ט״ז, ש״ך, 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 116.
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 (Taz, Shach, 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). This siman touches life and health: more than anywhere else, every concrete application (le-ma'asse) concludes with the referral to your Rav — and, for what is medical, to your physician. Real cases blend factual details (state of health, exact nature of the risk, circumstances) that only a posek who sees your situation can decide.

📑 תוכן העניינים

שורש הסימן — מצוות שמירת הגוף, וסכנתא חמירא מאיסורא (סעיף ה')
פסק המחבר והרמ״א — מסגרת ההלכה בז' סעיפים
בשר ודג — קינוח והדחה, ריחא, שומן עוף ודג (סעיף ב'–ג')
סכנתא חמירא מאיסורא — שומר נפשו ירחק, ולא לסמוך על הנס (סעיף ה')
גילוי — בטל הטעם בטלה הגזרה (סעיף א')
רוח רעה ובל תשקצו — תחת המטה, היגיינה ומיאוס (סעיף ה'–ו')
מסוכנת — בעל נפש ומדקדקים (סעיף ז')
פסיקת הספרדים בזמננו — Yabia Omer, Yalkut Yossef
פסיקת האשכנזים — Iggrot Moshe, Tzitz Eliezer and the acharonim
מקרים מודרניים — Tobacco, driving, health precautions
סיכום מעשי וטבלאות — ולמעשה, שאל את רבך

📜 The text of the Shulchan Aruch — the great principle (Seif Hé)

וְכֵן יִזָּהֵר מִכָּל דְּבָרִים הַמְּבִיאִים לִידֵי סַכָּנָה, כִּי סַכַּנְתָּא חֲמִירָא מֵאִיסּוּרָא, וְיֵשׁ לָחוּשׁ יוֹתֵר לְסָפֵק סַכָּנָה מִלְּסָפֵק אִיסּוּר.

וְכָל אֵלּוּ הַדְּבָרִים הֵם מִשּׁוּם סַכָּנָה, וְשׁוֹמֵר נַפְשׁוֹ יִרְחַק מֵהֶם, וְאָסוּר לִסְמוֹךְ אַנֵּס אוֹ לְסַכֵּן נַפְשׁוֹ בְּכָל כַּיּוֹצֵא בָּזֶה.

The master principle. One must beware of everything that leads to danger, for danger is graver than prohibition (סַכַּנְתָּא חֲמִירָא מֵאִיסּוּרָא), and one is concerned more about a doubt of danger than a doubt of prohibition.

All this is on account of danger: he who guards his life keeps far from them, and it is forbidden to rely on a miracle or to endanger one's life in any such case.

— Shulchan Aruch, Yoreh De'ah 116:5 (Rama) · talmudic basis: Chullin (meat and fish), Pesachim (גילוי, רוח רעה), Berachot · cf. Choshen Mishpat 427 · Sefaria YD 116:5

1. שורש הסימן — the duty to preserve life

The foundation. Siman 116 is not a siman of classic kashrut (טומאה / היתר), but the seat of the duty to preserve life and health. Things are forbidden here not through an intrinsic impurity, but through סכנה (danger) or through disgust (בל תשקצו). The whole siman turns on one structuring principle, stated by the Rama in seif 5: סכנתא חמירא מאיסורא — "danger is graver than prohibition" — which inverts the usual order of priorities: where, in matters of prohibition, one may lean on doubts and leniencies, in matters of danger one is more stringent, for life is at stake.

Three families in the siman. (a) Dangers tied to food: meat and fish together (קשה לצרעת, seifim 2-3), uncovered drinks (גילוי, seif 1), human sweat (seif 4); (b) dangers tied to conduct and the general principle (seif 5: under the bed, planted knife, dangerous places, epidemic); (c) disgust (בל תשקצו, seif 6) and the מסוכנת (an animal in peril of death, seif 7), where the בעל נפש and the מדקדקים come in. The grid of psak is therefore not "60 / nullification" as in the simanim of תערובות, but: does this danger still exist today? did it lapse with its reason? is it a stringency of law or of piety (בעל נפש)?

Why "danger is graver than prohibition"

The Beit Yossef (in the name of the Gemara) grounds the rule: a ספק איסור may sometimes be permitted (ספק דרבנן לקולא, nullification, etc.), but a ספק סכנה always obliges stringency — "שומר נפשו ירחק מהם." The Taz (s.k. 2) draws a consequence for nullification: a דבר שיש בו סכנה does not nullify like a simple prohibition; one is more severe — אפילו ביבש במינו צריך ששים (cf. siman 134). This is the seed of this whole level: in matters of danger, the scale always tips toward caution.

2. פסק המחבר והרמ״א — the map of the siman

Siman 116 contains 7 seifim. The Mehaber lays out the dangers received from the Talmud; the Rama (הגה) glosses, and it is he who states the great principle (seif 5) and refines the custom on meat and fish (seifim 2-3) and on the מסוכנת (seif 7). Here is the overall map, as it emerges from the text itself.

Seif	Subject	Psak (anchored in the text)
1	גילוי — uncovered drinks	The Sages forbade drinks left uncovered (fear that a serpent had injected its venom); today that serpents are not among us, it is permitted. Taz s.k. 1: this is not a דבר שנאסר במנין — it holds only while there are serpents (≠ the milk of siman 115). PT s.k. 1: the של״ה and the Gra remained cautious.
2	בשר ודג — not eating them together	One is careful not to eat meat and fish together (קשה לצרעת). Rama: do not roast them together (משום ריחא); but bediavad the ריחא alone does not forbid.
3	קינוח והדחה — between the two	Rinse hands between meat and fish, eat bread dipped between them. Rama / י״א: one is concerned only when cooked together; and the custom is not to rinse hands/mouth but to eat and drink something between the two (קינוח והדחה). PT s.k. 2: goose fat in a fish dish = the same concern.
4	זיעת האדם — sweat	All human sweat = סם המוות (poison), except the sweat of the face.
5	סכנתא חמירא מאיסורא — the great principle	Coins in the mouth, palm under the armpit, bread under the armpit, dishes/drinks under the bed (רוח רעה), a knife planted in an etrog/radish — all forbidden. Rama: beware of everything that leads to danger, for סכנתא חמירא מאיסורא; dangerous places (leaning wall, alone at night), river water at night, the תקופה, flee the city in an epidemic (at its start); שומר נפשו ירחק; forbidden to rely on a miracle; cf. Choshen Mishpat 427.
6	בל תשקצו — disgust	Forbidden to eat/drink what is repulsive (mixed with vomit, excrement, foul pus…), or in filthy/repulsive vessels, or with soiled hands — "אל תשקצו את נפשותיכם." Taz s.k. 6: מכת מרדות (not מלקות, a lav she-bichlalut).
7	מסוכנת — an animal in peril	An animal in danger of death (mesukenet), even rendered permitted by shechita, the scrupulous (המדקדקים) abstain from it. Rama: an animal permitted by the reasoning (סברא) of a sage, when the din is not explicit, the בעל נפש does not eat from it. PT s.k. 10.

כלל הפסק של הסימן :
יסוד אחד חותך את כל הסימן — סכנתא חמירא מאיסורא, ויש לחוש יותר לספק סכנה מלספק איסור. ומכאן: שומר נפשו ירחק מכל המביא לידי סכנה, ואסור לסמוך על הנס. ושני דברים נפרדים: גזרות שבטל טעמן (כגון גילוי) — בטלות ; ודיני בעל נפש ומדקדקים (מסוכנת) — חומרת חסידות, לא עיקר הדין.

3. בשר ודג — meat and fish, the living דין of the siman

צריך ליזהר שלא לאכול בשר ודג ביחד מפני שקשה לצרעת. הגה: וכן אין לצלות בשר עם דג משום ריחא, מיהו בדיעבד אינו אסור. ויש אומרים דאין לחוש לזה רק כשמבשלם יחד, וכן נוהגין שלא לרחוץ הפה ולא הידים ביניהם, ומכל מקום יש לאכול דבר ביניהם ולשתות דהוי קינוח והדחה.

— שולחן ערוך יו״ד קט״ז:ב–ג

The din and the custom. The Mehaber forbids eating meat and fish together (קשה לצרעת — a risk of צרעת). The Rama adds two refinements: (1) do not roast them together (משום ריחא, the concern of the odor), but bediavad the ריחא alone does not forbid the dish; (2) according to the י״א, one is concerned only when they are cooked together and eaten so, not eaten one after the other. The ruled custom (Rama, seif 3): one no longer rinses the hands and mouth between them, but one eats and drinks something between the two — this is קינוח והדחה.

Poultry and fish fat (PT s.k. 2). The Pitchei Teshuva reports the Shvut Yaakov: goose fat (שומן) fallen into a fish dish falls under the same concern of סכנה — and one does not distinguish between poultry and cattle in this regard. A practical point: the meat-fish concern is not limited to the flesh; it extends to fats and sauces.

The nullified danger: lenient and stringent (Taz s.k. 2; PT s.k. 3)

The Taz (s.k. 2) — stringent for nullification: a דבר שיש בו סכנה does not nullify like a simple prohibition; one requires 60 and is severe אפילו ביבש במינו (whereas an ordinary prohibition dry-in-dry nullifies otherwise — cf. siman 134). The danger "weighs heavier" in the scale of nullification.
Chavot Yair and Shvut Yaakov — lenient (PT s.k. 3): the Pitchei Teshuva reports that these two poskim are lenient: a mixture of meat and fish does nullify in the majority (ברוב / בששים) as a danger become tenuous; only the ארס נחש (serpent's venom, in the גילוי) never nullifies. There is thus a genuine מחלוקת on the severity of nullification in matters of danger.

Le-ma'asse (meat & fish). In practice: one neither cooks nor serves meat and fish together in one dish; between the one and the other, one does קינוח והדחה — eat a little bread and drink something between them (a universally followed custom, and one of the rare laws of danger in the Shulchan Aruch still alive in daily life). For a mixture that happened by mistake (a spoon of fish in a meat dish, poultry fat in the fish), bediavad, the poskim differ on nullification (Taz stringent / Chavot Yair lenient) — for the application to your situation, consult your Rav.

4. סכנתא חמירא מאיסורא — the great principle and its applications

ולא יתן תבשיל ולא משקים תחת המטה מפני שרוח רעה שורה עליהם... הגה: וכן יזהר מכל דברים המביאים לידי סכנה כי סכנתא חמירא מאיסורא, ויש לחוש יותר לספק סכנה מלספק איסור... ושומר נפשו ירחק מהם, ואסור לסמוך אנס או לסכן נפשו בכל כיוצא בזה, ועיין בחושן משפט סימן תכ״ז.

— שולחן ערוך יו״ד קט״ז:ה

The text of seif 5. The Mehaber enumerates dangerous conducts drawn from the Talmud: not to put coins in the mouth (the dried saliva of the sick), not to slip the palm under the armpit (contact with a leper or a poison), nor bread under the armpit (sweat), not to leave dishes and drinks under the bed (a רוח רעה rests upon them), not to plant a knife in an etrog or radish (one might fall upon it). The Rama generalizes: beware of everything that leads to danger — dangerous places (leaning wall, alone at night), river water at night, the custom not to drink water at the תקופה, and to flee the city in an epidemic at its start ("בתחילת הדבר ולא בסופו").

רוח רעה under the bed — lekhatchila / bediavad (PT s.k. 4-5). The Pitchei Teshuva nuances: (s.k. 4) the Shvut Yaakov permits bediavad food left under the bed (one does not discard it) — the severity is lekhatchila; (s.k. 5) the Gra extends the caution even to raw food, but adds "האידנא דדשים בה רבים" — today that many are accustomed to it, the danger is less clear. This is the typical example of a concern where one distinguishes the initial stringency from the real need.

הכרעה. Seif 5 is not a fixed list but a principle: "שומר נפשו ירחק מהם." What flows from it directly and remains living — meat/fish, not endangering oneself, not relying on a miracle — engages the din. The received details (under the bed, knife, תקופה) are read in light of the lekhatchila/bediavad nuances of the Acharonim (Shvut Yaakov, Gra), without turning them into absolute prohibitions where the danger no longer holds.

Le-ma'asse (the principle). Retain the golden rule: in matters of danger one is more stringent than in matters of prohibition, and it is forbidden to rely on a miracle or to put oneself in peril. For the received details (food under the bed, etc.), distinguish lekhatchila from bediavad. For the application to your situation, consult your Rav.

5. גילוי — the decree lapsed with its reason

משקים שנתגלו אסרום חכמים דחיישינן שמא שתה נחש מהם והטיל בהם ארס ; ועכשיו שאין נחשים מצויים בינינו — מותר.

— שולחן ערוך יו״ד קט״ז:א

בטל הטעם בטלה הגזרה. Drinks (water, wine, milk) left uncovered were forbidden for fear that a serpent had drunk from them and injected its venom. The Mehaber rules: today that serpents are not among us, it is permitted. This is a textbook case: a decree whose reason (the presence of serpents) has vanished lapses with it.

Why the גילוי lapses while the milk (115) does not (Taz s.k. 1)

The Taz (s.k. 1) sets the decisive distinction: the גילוי is not a דבר שנאסר במנין (a decree formally "voted" by a beit din). It was only a precaution against a danger: as long as there are serpents it holds, and when there are none it lapses — with no need for a new vote to repeal it. By contrast, a non-Jew's milk (חלב עכו״ם, siman 115) was נאסר במנין: even though one can supervise the milking, the decree holds until an equal beit din lifts it. Hence the general rule: a voted decree does not lapse with its reason; a precaution against danger does.

Pitchei Teshuva (s.k. 1): the של״ה and the Gra report that one should nonetheless remain cautious with uncovered drinks where a danger (insects, dirt, modern venoms) may subsist — a residual caution, not a reinstated prohibition. The concern for health remains even when the formal decree is lifted.

Le-ma'asse (גילוי). The גילוי is lifted today: one does not forbid a drink for having been left uncovered. But the spirit of the siman remains — one does not drink water visibly soiled or suspect, out of caution (של״ה, Gra) and under בל תשקצו. For borderline cases (a drink long left in the open, a doubt about its wholesomeness), consult your Rav.

6. רוח רעה ובל תשקצו — hygiene, disgust and caution

אסור לאכול מאכלים ומשקים שנפשו של אדם קצה בהם... וכן אסור לאכול ולשתות בכלים הצואים שנפשו של אדם קצה בהם... ולא יאכל בידים מזוהמות ועל גבי כלים מלוכלכים, שכל אלו בכלל אל תשקצו את נפשותיכם.

— שולחן ערוך יו״ד קט״ז:ו

בל תשקצו (seif 6). It is forbidden to eat or drink what repulses the soul — foods mixed with vomit, excrement, foul pus; to eat/drink in filthy and repulsive vessels (chamber-pots, the glasses used for bloodletting); or to eat with soiled hands. All this falls under the verse "אַל תְּשַׁקְּצוּ אֶת נַפְשֹׁתֵיכֶם." It is a Torah prohibition, but of a particular form.

Taz (s.k. 6): one who transgresses בל תשקצו receives מכת מרדות (a rabbinic penalty), not מלקות of the Torah — for it is a לאו שבכללות (a "general" prohibition, encompassing several things), and one is not lashed for such a lav. The Maharshal debates this (reported PT s.k. 9). The practical rule remains: one abstains from it absolutely, even though the formal penalty is rabbinic.

רוח רעה under the bed (recalling seif 5). The concern over food left under the bed (where a רוח רעה rests) practically joins בל תשקצו: it is a caution of hygiene and purity. As seen (§4), the Shvut Yaakov permits bediavad and the Gra nuances "דדשים בה רבים" — so one is careful lekhatchila, without declaring forbidden every food that passed under a bed.

Le-ma'asse (בל תשקצו, רוח רעה). One does not consume a food or drink that has become repulsive, nor in a filthy vessel; one washes the hands before eating. As for רוח רעה (food under the bed), one is stringent lekhatchila and more lenient bediavad. The exact degree of "repulsiveness" that forbids a food, and the cases of doubt, belong to judgment — for the application to your situation, consult your Rav.

7. מסוכנת — the stringency of the בעל נפש

מסוכנת, אף על פי שניתרת בשחיטה, המדקדקים מחמירים על עצמם שלא לאכלה. הגה: בהמה שהורה בה חכם מסברא ולא נמצא הדין בפירוש שהיא מותרת, בעל נפש לא יאכל ממנה.

— שולחן ערוך יו״ד קט״ז:ז

מסוכנת (seif 7). An animal in danger of death (מסוכנת — sick, dying), even if rendered permitted by a valid shechita, the scrupulous (המדקדקים) abstain from it. The Rama adds a second case: an animal declared permitted by the reasoning (סברא) of a sage — when the din is not explicit — the בעל נפש does not eat from it. This is not the strict prohibition (the thing is permitted as to din), but a stringency of piety and caution.

Stringency of din or of piety?

The nuance is essential for psak. The מסוכנת permitted by shechita, and the animal permitted by סברא, are permitted in the strict sense: one who eats them does not transgress. The siman creates no prohibition here; it records a conduct of the בעל נפש and the מדקדקים — those who "guard themselves" add a layer of caution where a suspicion of danger or an undecided din remains. The Pitchei Teshuva (s.k. 10) defines the contours of this ספק.

Le-ma'asse (מסוכנת). As to din the animal is permitted; but the practice of the בעלי נפש and the מדקדקים is to abstain, as from what is permitted only by a non-explicit reasoning. To know whether a given situation calls for the recommended stringency or is merely an ordinary permission — and how far to carry that stringency — is a question of psak. For the application to your situation, consult your Rav.

8. פסיקת הספרדים בזמננו — the contemporary Sephardic psika

Note on method. The responsa that follow (Yabia Omer, Yehaveh Da'at, Yalkut Yossef) extend the principles of siman 116 above to modern cases. They do not appear in the corpus of the siman; they are cited as recognized streams of psika, to be confirmed with a Rav before any application.

The contemporary Sephardic psika (the school of Rav Ovadia Yosef) takes בשר ודג very seriously: one strictly abstains from mixing them, one practices קינוח והדחה, and one extends the caution to fats and sauces (cf. PT s.k. 2, the Shvut Yaakov). On the great principle סכנתא חמירא מאיסורא, Rav Ovadia (Yabia Omer / Yehaveh Da'at) applies it to contemporary health questions: he strongly discourages tobacco under "שומר נפשו ירחק" and the prohibition of endangering oneself, while discussing the formal status of those already habituated to it.

Concrete case	Sephardic orientation (to be verified)
Meat & fish	Strict separation; קינוח והדחה (eat/drink between the two); caution on fats and sauces (PT s.k. 2).
Mixture by mistake (bediavad)	One leans on the lenient ones (Chavot Yair / Shvut Yaakov, PT s.k. 3) for the nullification of a danger become tenuous — case by case.
גילוי	Lifted (no serpents); residual caution of wholesomeness (של״ה, Gra).
Tobacco / risky conduct	Strongly discouraged under "שומר נפשו ירחק" and the prohibition of endangering oneself (Yabia Omer).

9. פסיקת האשכנזים — the Ashkenazi psika

Note on method. The same remark applies: these streams extend the Rama and the nossei kelim; they are cited as landmarks of psika, to be confirmed with a Rav — and, for the medical, with a physician.

The Ashkenazi psika begins from the Rama and the acharonim, and it is here that siman 116 has seen its clearest contemporary developments, under סכנתא חמירא מאיסורא and "ונשמרתם מאד לנפשותיכם":

Contemporary question	Ashkenazi orientation (to be verified)
Tobacco	The Iggrot Moshe (Rav Moshe Feinstein) discusses at length the status of tobacco; the Tzitz Eliezer (Rav Eliezer Waldenberg) and many poskim forbid or firmly discourage it under the danger established for health.
Health precautions / medicine	Under "שומר נפשו ירחק," one follows recognized medical precautions; the Aruch HaShulchan (on this siman) stresses the weight of the duty to preserve health.
Reckless driving, risky conduct	Forbidden under the prohibition of endangering oneself and relying on a miracle (seif 5, cf. Choshen Mishpat 427).
בשר ודג	Strict separation, קינוח והדחה; one neither roasts nor cooks them together.

Chabad — only through real sources. The Shulchan Aruch HaRav does not cover Yoreh De'ah; there is therefore no "Da'at HaRav" on siman 116. For the Chabad practice on these questions of danger and health, 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.

10. מקרים מודרניים — health and danger today

How siman 116 sheds light on today's life. The siman is the classic seat of the duty to preserve health and life. The rule "danger is graver than prohibition" + "שומר נפשו ירחק" + the prohibition of relying on a miracle ground the halakhic stance before contemporary risks.

Modern case	Tool of the siman	Orientation (to be confirmed with the Rav / physician)
Tobacco	Seif 5 (סכנתא חמירא, שומר נפשו ירחק)	Many contemporary poskim (Tzitz Eliezer, Yabia Omer) forbid or strongly discourage it, the danger to health being established today; the Iggrot Moshe discusses its status.
Reckless driving, speeding, extreme sports	Seif 5 (not to endanger oneself, אסור לסמוך אנס)	Forbidden to endanger oneself and rely on a miracle; one takes the usual precautions (seatbelt, helmet…).
Health precautions (vaccines, treatments, hygiene)	Seif 5-6 (שמירת הגוף, בל תשקצו)	Under "ונשמרתם מאד" and the duty to preserve health, one follows recognized medical precautions (Aruch HaShulchan).
Meat & fish in daily life	Seif 2-3 (קינוח והדחה)	Do not cook/serve together; eat a little bread and drink between them. One of the rare laws of danger in the siman still alive at the table.
A drink left uncovered / a doubtful food	Seif 1, 6 (גילוי lifted; בל תשקצו)	The גילוי is lifted (no serpents); but one does not consume a soiled or suspect drink/food (caution of wholesomeness — של״ה, Gra).

Le-ma'asse. In matters of danger, the halakha is more demanding than in matters of prohibition: one keeps far from risk, one does not rely on a miracle, and one takes the recognized precautions for health. But assessing a real risk (medical, behavioral) blends facts and medicine. For the application to your situation, consult your Rav — and, for what is medical, your physician.

11. סיכום מעשי — summary and tables

טבלה — the seven seifim, in practice

Seif	Subject	Practical rule (for us)
1	גילוי	Lifted today (no serpents); residual caution of wholesomeness.
2-3	בשר ודג	Not together; קינוח והדחה (bread + drink between them); bediavad of the ריחא.
4	זיעת האדם	Sweat (except the face) held to be harmful; caution of hygiene.
5	סכנתא חמירא מאיסורא	שומר נפשו ירחק; do not endanger oneself or rely on a miracle; applications: tobacco, driving, health.
6	בל תשקצו	No repulsive food/vessel and no soiled hands (מכת מרדות, Taz).
7	מסוכנת	Permitted by din, but בעל נפש / מדקדקים abstain.

טבלה — who says what (the nossei kelim of the siman)

Posek	Decisive contribution (anchored in the corpus)
Mehaber (seifim 1-7)	גילוי lifted; בשר ודג קשה לצרעת; sweat = סם המוות; the dangerous conducts; בל תשקצו; the מסוכנת that the מדקדקים avoid.
Rama (הגה)	Do not roast בשר with דג (ריחא; bediavad permitted); קינוח והדחה (seif 3); the great principle סכנתא חמירא מאיסורא, שומר נפשו ירחק, flee the epidemic, forbidden to rely on a miracle (seif 5); בעל נפש and the animal permitted by סברא (seif 7).
Taz (Turei Zahav)	s.k. 1: the גילוי is not נאסר במנין → lapsed (≠ milk 115); s.k. 2: סכנה ≥ איסור for nullification, צריך ששים אפילו ביבש במינו; s.k. 6: בל תשקצו = מכת מרדות (lav she-bichlalut).
Shach (Siftei Kohen)	s.k. 1: roasting בשר with דג lekhatchila forbidden (ריחא), bediavad permitted unless the fat flows from one to the other.
Pitchei Teshuva (פתחי תשובה)	s.k. 1: של״ה / Gra cautious despite the abrogation of גילוי; s.k. 2: Shvut Yaakov (goose fat in fish); s.k. 3: Chavot Yair / Shvut Yaakov lenient on nullification (only the ארס נחש does not nullify); s.k. 4-5: under the bed bediavad permitted (Shvut Yaakov), Gra "דדשים בה רבים"; s.k. 8: flee the epidemic (Rashbash); s.k. 9: בל תשקצו (Taz/Maharshal polemic); s.k. 10: מסוכנת / ספק.

טבלה — contemporary streams of psika (outside the corpus, to be verified)

Sephardic: the school of Rav Ovadia Yosef (Yabia Omer, Yehaveh Da'at), Yalkut Yossef. Strict meat/fish separation + קינוח והדחה; tobacco strongly discouraged under "שומר נפשו ירחק"; גילוי lifted with residual caution of wholesomeness.

Ashkenazi: Iggrot Moshe (Rav Moshe Feinstein), Tzitz Eliezer (Rav Eliezer Waldenberg), Aruch HaShulchan. סכנתא חמירא מאיסורא applied to tobacco, reckless driving and health precautions; meat/fish separation.

Chabad: no Shulchan Aruch HaRav on the YD. One cites only real sources — responsa of the Tzemach Tzedek, the Sefer HaMinhagim — when they explicitly address the point.

Sefaria links (text and nossei kelim)

Shulchan Aruch YD 116: 116:1 · 116:2 · 116:5 · 116:7
Taz (Turei Zahav): 116 s.k. 1 · 116 s.k. 2
Shach (Siftei Kohen): 116 s.k. 1
Pitchei Teshuva: 116 s.k. 1 · 116 s.k. 10

👈 הלכה למעשה — the golden rule of this level

In substance, retain the yesod of the siman: סכנתא חמירא מאיסורא — in matters of danger one is more stringent than in matters of prohibition, and one is more concerned about a doubt of danger.
In practice, the living din of the siman is בשר ודג: not together, and קינוח והדחה (eat/drink between the two).
The great principle governs conduct before tobacco, reckless driving and health precautions: שומר נפשו ירחק, and one does not rely on a miracle (real poskim: Iggrot Moshe, Tzitz Eliezer, Yabia Omer, Aruch HaShulchan).
Distinguish decrees lapsed with their reason (גילוי) from stringencies of piety (מסוכנת, בעל נפש); and for any real case — halakha le-ma'asse goes through your Rav (and the medical through your physician).

← Level 3 — Synthesis ↑ Siman קט״ז — contents

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פסק והלכה למעשה בדברים האסורים משום סכנה · סימן קט״ז · ⚖️ Level 4 — Halakha le-ma'asse

⚠️ This content is for study purposes. The contemporary streams of psika cited (Sephardic and Ashkenazi) are landmarks, not a personal psak. For any practical application (לְמַעֲשֶׂה), consult a qualified Rav — and, for what is medical, a physician.

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