Eruvin 95a

עירובין צ״ה ע״א

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Topic

Whose view do the rulings about a four-handbreadth beam follow, and do אביי and רבא in the סוכה case split along the lines of the רב and שמואל dispute over פי תקרה יורד וסותם?

Overview

This amud finishes the chapter כל גגות and begins the chapter המוצא תפילין. First, the גמרא asks whose view two four-handbreadth beam rulings follow. It also checks whether the dispute between אביי and רבא about a סוכה on a portico is the same as the dispute between רב and שמואל. It concludes that the two disputes are not identical. Next, it explains that רבי יוסי meant to forbid carrying even on that same שבת. It then resolves an apparent contradiction in שמואל's rulings: he follows רבי יהודה when a breach opens into a כרמלית, but not when it opens into רשות הרבים. A new משנה follows: רבי יהודה permits carrying under an upper story or bridge, and making an עירוב for an alley open at both ends. רבה explains that the upper-story case rests on פי תקרה יורד וסותם, and רב אשי proves this from the word ועוד. After the הדרן, the new chapter opens with the case of someone who finds תפילין outside on שבת and brings them in by wearing them.

Opening lines

The steps (28)

1. QuestionWhose view do the two four-handbreadth beam rulings follow?
2. ResponseThe answer depends on which version of the dispute you hold
3. QuestionSuggesting that אביי and רבא repeat the רב and שמואל dispute in the סוכה case
4. StatementExplaining the reasoning of אביי and רבא
5. QuestionSo is אביי following רב and רבא following שמואל?
6. Rejectionרבא can also agree with רב
7. QuestionDid רבי יוסי mean to forbid or to permit?
8. Responseרב ששת and רבי יוחנן: he meant to forbid
9. ProofA ברייתא supports the forbidding reading
10. StatementThe halachic ruling: רבי יוסי or רבי יהודה
11. ChallengeDid שמואל really say that? The גמרא quotes a משנה
12. Challengeשמואל's general rule: the הלכה follows רבי יהודה in עירובין
13. Questionרב חנא asks: does this rule apply even to an alley that lost its beam or post?
14. Responseרב יהודה: the rule is about עירובין, not partitions
15. Resolutionרב ענן: it depends on where the breach opens
16. StatementCarrying under an upper story or bridge
17. StatementMaking an עירוב for an alley open at both ends
18. Statementרבה explains רבי יהודה's reason: the roof edge closes the sides
19. Challengeאביי objects: רבי יהודה is lenient even with no roof
20. Resolutionרבה: The ברייתא proves it, the משנה does not
21. Proofרב אשי: The wording of the משנה supports רבה
22. ProofIf the reason is the roof edge, "ועוד" makes sense
23. ProofIf the reason is two walls, "ועוד" makes no sense
24. ConclusionConclusion: רבה's explanation is proven
25. ConclusionHadran — Closing the chapter כל גגות
26. StatementRescuing found תפילין by wearing them
27. StatementOnly old תפילין, not new ones
28. StatementBundles: guard them until nightfall