✦ ❖ ✦ D A A T · L E V E L 3 — S Y N T H E S I S / R E V I E W ✦ ❖ ✦
Siman 183 — The Foundation of Niddah and the Seven Clean Days
אִשָּׁה שֶׁרוֹאָה טִפַּת דָּם צְרִיכָה לֵישֵׁב שִׁבְעָה נְקִיִּים
מקור, הרגשה (three kinds), עקירה, כחרדל, seven clean days, and the חומרא דרבי זירא that unifies נדה and זבה
Structured review, master grid, fast memorization
Source: Shulchan Aroukh, Yoreh De'ah קפ״ג — 1 seif (the foundation of all טהרת המשפחה)
Nossei kelim: ש״ך (Shach) · ט״ז (Taz) · פתחי תשובה (Pithei Teshuva) · סדרי טהרה (Sidrei Tahara)
Compiled by: הרב יוסף חיים סממה · DAAT
For students who have mastered Levels 1 and 2
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📑 Outline of the synthesis
- The axiom: uterine blood with הרגשה → niddah → seven clean days
- The 3 reflex questions: where the blood comes from · did she feel it · how much
- The master grid: מקור, הרגשה, עקירה, כחרדל, 7 נקיים
- The "foundation" box: נדה דאורייתא vs זבה and the חומרא דרבי זירא
- The 5 golden rules
- Mnemonic — the "NIDAH" memory aid
- The 4 classic pitfalls
- Recap of the single seif — the key concepts
- Final flashcard
1. The axiom: uterine blood with הרגשה → niddah → seven clean days
The starting point:
A woman whose blood comes out of her מקור (her uterine source) — whether באונס (under compulsion: a jump, an exertion) or ברצון (naturally) — is טמאה (niddah), provided she felt it (הרגשה) at the moment it detached. As soon as she feels that it detached from its place and came out, she is טמאה even if it did not exit to the outside (לבית החיצון), and even a single drop "כחרדל" (like a mustard grain) → she counts seven clean days (שבעה נקיים) (details at siman קצ״ו), then טבילה.
| Concept | What is required | Cross-reference |
|---|
| מקור (uterine source) | Only blood from the makor renders טמאה (Shach: "מקור דמיה") | siman ק״צ for כתמים |
| הרגשה (the sensation) | A דאורייתא condition — without it, it is not the same status | PT s.k. 1 (3 kinds) |
| שבעה נקיים | Always seven clean days before the טבילה (חומרא דרבי זירא) | siman קצ״ו |
💡 The marker: this siman does not describe a particular case, it is the foundation of all טהרת המשפחה. Three words to remember: מקור (the origin), הרגשה (the sensation), שבעה נקיים (the count). And one universal principle: "כל הבא על הנדה חייב כרת" — the prohibition applies with no distinction between single and married (Rama, in the name of the Rivash).
2. The 3 reflex questions
■ WHERE DOES THE BLOOD COME FROM? (מקור) — does the blood come from the makor (the uterine source)? Only this blood renders טמאה (Shach, derashah "מקור דמיה"). Blood of another origin (a wound, מכה) is a separate matter, to be clarified with a Rav (cf. כתמים, siman ק״צ).
↓ we look at the sensation
■ DID SHE FEEL IT? (הרגשה) — was there הרגשה at the moment the blood detached? This is the דאורייתא condition. The PT (s.k. 1) distinguishes three kinds: שנזדעזע גופה (the body shudders), שנפתח מקורה (opening of the makor), דבר לח זב (a moist flow). Without הרגשה → it is not the same status (כתם, דרבנן, siman ק״צ).
↓ we look at the quantity and the moment
■ HOW MUCH, AND WHEN? (כחרדל / עקירה) — even a single drop "כחרדל" suffices (PT s.k. 3). And the טומאה arises from the עקירה (detachment from the makor), even without exit to the outside (Taz). → she counts seven clean days (siman קצ״ו).
⚖ עקירה or יציאה? (Taz · PT s.k. 2)
The טומאה arises from the עקירה — the detachment of the blood from its place in the makor — even if it has not yet exited לחוץ (Taz; cross-reference siman קפ״ח). The PT (s.k. 2) brings the שאלה of the ברית אברהם: does the exit from the בית החיצון to the outside count? The detail is a matter for in-depth study; in practice, once she feels that the blood has detached, the case is treated. For the application to your situation, consult your Rav (or a competent Dayan / Yoetzet).
3. The master grid: מקור, הרגשה, עקירה, כחרדל, 7 נקיים
An absolute must to memorize. Basis: Mehaber single seif, read with the Taz (s.k. 1-2), the Shach and the Pitchei Teshuva (s.k. 1-4).
| Element | Decisive criterion | Result |
|---|
| Origin of the blood |
מקור (Shach: "מקור דמיה") |
🔴 From the makor → טמאה; other origin → separate matter (Rav) |
| Cause (exertion or nature) |
באונס (jump/exertion) or ברצון |
🔴 Both render טמאה (Taz s.k. 1) |
| The sensation |
הרגשה (3 kinds — PT s.k. 1) |
🔴 With הרגשה → דאורייתא; without → כתם דרבנן (ק״צ) |
| The moment of טומאה |
עקירה (detachment from the makor) |
🔴 טמאה even without exit לבית החיצון (Taz; קפ״ח) |
| The quantity |
כחרדל (PT s.k. 3) |
🔴 A single drop suffices, even דם יבש |
| The practical consequence |
שבעה נקיים (חומרא דרבי זירא) |
🟢 Seven clean days before the טבילה (קצ״ו) |
| Scope of the prohibition |
"כל הבא על הנדה חייב כרת" |
🔴 No distinction single / married (Rama, Rivash) |
📌 Key reading: first ask מקור (the origin), then הרגשה (it is the sensation that fixes the דאורייתא status), finally כחרדל / עקירה (the smallest drop, from the moment of detachment). The consequence is always the same: seven clean days, because all contemporary practice rests on the חומרא דרבי זירא.
4. The "foundation" box: נדה דאורייתא vs זבה and the חומרא דרבי זירא
⚖ Why always seven clean days?
By Torah law, there are two institutions:
- נדה דאורייתא: blood seen during the days of niddah → she counts seven days from the sighting, then טבילה (without requiring "clean" days).
- זבה: blood seen outside the days of niddah → she must, depending on the case, count seven clean days (נקיים) before the טבילה.
The חומרא דרבי זירא (Niddah 66a): "בנות ישראל החמירו על עצמן" — the daughters of Israel accepted that every sighting of blood, even a drop, even during the days of niddah, be treated as a possible זיבה. Hence the unified practice: one always counts seven clean days before the טבילה. This is what ties the single seif of 183 to all of contemporary טהרת המשפחה (details of the count: siman קצ״ו).
5. The 5 golden rules
- מקור. Only blood from the makor renders טמאה (Shach, "מקור דמיה"); blood of another origin is a separate matter (Rav / physician; cf. ק״צ).
- הרגשה = דאורייתא. The sensation at the moment of detachment is the basic condition. Three kinds (PT s.k. 1). Without it → כתם (דרבנן, siman ק״צ), a different status.
- עקירה suffices. טמאה from the detachment from the makor, even without exit לבית החיצון (Taz; siman קפ״ח).
- כחרדל. The smallest drop suffices, even dried (PT s.k. 3); no minimum measure and no distinction.
- שבעה נקיים — the חומרא דרבי זירא. Every sighting → one counts seven clean days before the טבילה (Niddah 66a; siman קצ״ו). The prohibition is universal: "כל הבא על הנדה חייב כרת" (Rama, Rivash).
6. Mnemonic — the "NIDAH" memory aid
"N-I-D-A-H" — the five pillars of the siman
- N — Native to the מקור: only blood from the uterine source renders טמאה.
- I — Impression felt (הרגשה): the sensation is the דאורייתא condition (3 kinds).
- D — Detachment (עקירה): טמאה from the detachment, even without exit to the outside.
- A — Atom of blood (כחרדל): the smallest drop suffices.
- H — Holding seven days (ז׳ נקיים): one always counts seven clean days (חומרא דרבי זירא).
The three kinds of הרגשה (PT s.k. 1)
- שנזדעזע גופה → the body shudders (Rambam, א״ב פ״ה)
- שנפתח מקורה → opening of the makor (simanim קפ״ח, ק״ן)
- דבר לח זב → sensation of a moist flow (Aharonim)
7. The 4 classic pitfalls
❌ Pitfall 1 — Believing a כתם without הרגשה has the same status: a stain found without sensation (כתם) belongs to a different regime, דרבנן (siman ק״צ), with its own measures and conditions. The הרגשה founds the דאורייתא status; do not conflate the two. For your situation, consult your Rav.
❌ Pitfall 2 — Believing that exit to the outside is required: one might think that as long as the blood has not exited לחוץ, there is no טומאה. Wrong: the טומאה arises from the עקירה (detachment from the makor), even if it has not exited לבית החיצון (Taz; cross-reference siman קפ״ח). It is the sensation of the detachment that counts.
❌ Pitfall 3 — Overlooking the origin of the blood (מקור vs מכה): only blood from the makor renders טמאה (Shach, "מקור דמיה"). Blood of another origin (a wound, מכה, a medical cause) is a separate matter and is not decided alone. For cases of non-menstrual bleeding, consult your Rav (and, if needed, a physician).
❌ Pitfall 4 — Trivializing the universality of the prohibition: the prohibition of niddah makes no distinction between single and married (Rama, in the name of the Rivash), for "כל הבא על הנדה חייב כרת". It is a grave and intimate subject, to be treated with sobriety.
For the application to your situation, consult your Rav (or a competent Dayan / Yoetzet).
8. Recap of the single seif — the key concepts
| Concept | Source / nossei kelim | The essential |
|---|
| מקור | Mehaber; Shach | The blood must come from the uterine source (makor) to render טמאה. Derived from the verse "וְהִיא גִלְּתָה אֶת מְקוֹר דָּמֶיהָ". Blood of another origin (מכה) is a separate matter (cf. ק״צ). |
| אונס / רצון | Mehaber; Taz s.k. 1 | Whether the blood comes out under compulsion (a jump, an exertion = אונס) or naturally (רצון), she is טמאה in both cases. |
| הרגשה | Mehaber; PT s.k. 1 | The sensation at the moment of detachment is the דאורייתא condition. Three kinds: שנזדעזע גופה (the body shudders), שנפתח מקורה (opening of the makor), דבר לח זב (a moist flow). Without it → כתם דרבנן (ק״צ). |
| עקירה | Taz s.k. 2; PT s.k. 2 | The טומאה arises from the detachment from the makor, even without exit to the outside (לבית החיצון). שאלה of the ברית אברהם on the exit לחוץ (cross-reference קפ״ח). |
| כחרדל | Mehaber; PT s.k. 3 | Even a single drop "like a mustard grain" suffices (Shev Yaakov, Keter Kehunah; even דם יבש, dried blood). |
| שבעה נקיים | Mehaber; Niddah 66a | She counts seven clean days before the טבילה. This is the חומרא דרבי זירא (בנות ישראל): every sighting of blood treated as a possible זיבה. Details of the count at siman קצ״ו. |
| פנויה / נשואה / כרת | Rama; Rivash | No distinction between single and married regarding the prohibition, for "כל הבא על הנדה חייב כרת". Universal scope. |
9. Final flashcard
| Question | Reflex answer | Source |
|---|
| Where must the blood come from to render טמאה? | From the מקור (the uterine source) | Mehaber; Shach |
| Exertion/compulsion or nature? | Both (אונס ורצון) render טמאה | Taz s.k. 1 |
| What fixes the דאורייתא status? | The הרגשה (3 kinds) | Mehaber; PT s.k. 1 |
| Must the blood have exited to the outside? | No: טמאה from the עקירה, even without exit לבית החיצון | Taz s.k. 2 (קפ״ח) |
| What quantity suffices? | A drop "כחרדל" suffices | PT s.k. 3 |
| Does a stain without sensation have the same status? | No: כתם, a distinct דרבנן regime | siman ק״צ |
| How many days before the טבילה? | Seven clean days (חומרא דרבי זירא) | Niddah 66a; קצ״ו |
| Does the prohibition distinguish single and married? | No: "כל הבא על הנדה חייב כרת" | Rama; Rivash |
⚖ The reflex in 3 questions
- Where does the blood come from? From the מקור → טמאה. Another origin (מכה) → separate matter, with a Rav.
- Did she feel it, and how much? הרגשה (דאורייתא, 3 kinds); even a "כחרדל" drop; טמאה from the עקירה, even without exit to the outside.
- And then? Seven clean days before the טבילה (חומרא דרבי זירא, siman קצ״ו). Universal prohibition (kareth).
For the application to your situation, consult your Rav (or a competent Dayan / Yoetzet).
🎓 Recap of the study path
| Level | Content | Acquired |
|---|
| 🌱 Level 1 — Base |
Text of the single seif, translation, explanation of the concepts (מקור, הרגשה, ז׳ נקיים) |
Overall understanding |
| ⚡ Level 2 — Lamdan |
נדה דאורייתא vs זבה and the חומרא דרבי זירא, the 3 kinds of הרגשה, עקירה / יציאה, מקור דמיה, the universality (Rivash) |
In-depth study |
| ✨ Level 3 — Synthesis |
Master grid, foundation box, golden rules, mnemonic, pitfalls, recap of the seif |
Practical mastery + review |
| 🏛️ Level 4 — Daat HaRav (Chabad) & Halacha lema'asse |
The shitah of the Tzemach Tzedek and Chabad in טהרת המשפחה, contemporary pesak and practical application |
Decision and halacha lema'asse |
💡 Suggested next steps:
- Re-read Siman קפ״ג in the original Choulhan Aroukh (Hebrew) with the Shach, the Taz and the Pitchei Teshuva
- Study the adjacent simanim: 188 (sighting of blood / makor), 190 (כתמים — the stain without הרגשה), 196 (the שבעה נקיים and the בדיקות), 150 (foundations of the prohibition)
- Delve into Niddah 66a (the חומרא דרבי זירא) and the נדה / זבה relationship
- For personal cases (bleeding, סתירה, counting the נקיים) — the halacha le-ma'aseh is decided with a Rav (or a competent Dayan / Yoetzet)
📖 Sources of this siman on Sefaria:
~ ~ ~ ~ ~
DAAT · הרב יוסף חיים סממה
תלמיד חכם · מעביר שיעורים בהלכה ובחסידות
סימן קפ״ג · Level 3 — Synthesis / Review · The Foundation of Niddah and the Seven Clean Days
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