Niddah 54b

נדה נ״ד ע״ב

Learn Niddah 54b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

Birth days counting toward a זבה's clean days, and the impurity of דם הנדה whether moist or dry

Overview

The amud opens with a question: a זבה gives birth, and she sees no blood during the days of impurity after the birth. Do those days count toward her seven clean days for זיבה? רב כהנא brings a ברייתא about a woman who miscarried something unknown, which says those days do count. רב פפא tries to reject the proof, but רב הונא בריה דרב יהושע shows the rejection fails, and the גמרא concludes that the days count. The ברייתא then works out how many days a woman with a fixed cycle of bleeding and clean days may be with her husband. Then the chapter בא סימן ends, and a new chapter opens with a משנה. The משנה teaches that דם הנדה and בשר המת make things impure even when dry, while other substances stay impure only while moist, unless they can be soaked back to their original form. The גמרא finds verses for the impurity of דם הנדה, including dry blood. It then explains, from the word ״היא״, that her blood does not make a מִשְׁכָּב וּמוֹשָׁב impure.

Opening lines

The steps (29)

1. QuestionDo blood-free birth days count toward a זבה's clean days?
2. ProofA woman saw blood two days and miscarried on the third
3. ProofHer blood-free birth days count toward her זיבה
4. Rejectionרב פפא rejects the proof: the extra days may not be birth days at all
5. Challengeרב הונא challenges רב פפא: she might also have had a girl
6. ConclusionConclusion: birth days do count toward the זיבה count
7. StatementNine days of bleeding and nine clean days: eight permitted days
8. StatementTen and ten: her permitted days equal her זיבה days
9. ConclusionHadran — Closing פרק בא סימן
10. StatementMenstrual blood and corpse flesh are impure whether moist or dry
11. StatementOther impure substances make things impure only while moist
12. StatementIf they can be soaked back to their original state, they stay impure even when dry
13. QuestionHow long must the soaking last?
14. ResponseIn lukewarm water for a full day
15. Statementרבי יוסי: dry corpse flesh that cannot be restored is pure
16. QuestionWhat is the source?
17. Responseחזקיה: the flow is compared to the woman herself
18. QuestionWe have a source for moist blood, but what about dry blood?
19. Responseרבי יצחק learns from ״יהיה״ that the blood keeps its status
20. ChallengeThat only covers blood that dried later, not blood dry from the start or the dissolving test
21. Resolution״יהיה״ is an inclusion that covers every form of the blood
22. ChallengeIf the blood is like her, it should also make a bed and seat impure
23. ResolutionBlood cannot lie or sit
24. ChallengeA צרעת stone cannot lie or sit either, yet a verse was needed to exclude it
25. ProofThe ברייתא that considered making a צרעת stone cause מִשְׁכָּב וּמוֹשָׁב
26. ProofThe ברייתא's קל וחומר: a צרעת stone should make a bed and seat impure
27. ProofThe ברייתא's conclusion: the word ״הזב״ excludes the stone
28. ChallengeThe inference: without the verse, the stone would make a bed and seat impure
29. ResolutionThe answer: just as ״הזב״ excludes the stone, ״היא״ excludes her blood