Eruvin 90b

עירובין צ׳ ע״ב

Learn Eruvin 90b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

Carrying in a ship and in an אכסדרה: the מחלוקת of רב and שמואל, and the גזירות that keep roofs, courtyards and קרפפות separate.

Overview

The amud opens with the end of the מחלוקת between רב and שמואל about carrying in a ספינה. רב says one may carry in the whole ship because it has walls. שמואל says only four אמות, because the walls are only meant to keep water out. שמואל himself rules that the הלכה follows רב, though רב agrees about a ship that was turned over to be tarred. רב אחא בריה דרבא says שמואל's ruling was really said about a different case: an אכסדרה standing in a field. רב and שמואל argue there about whether פי תקרה יורד וסותם applies. The גמרא then challenges each side. The challenge to רב, who follows רבי מאיר, is answered with the גזירה of רב יצחק בר אבדימי. The challenge to שמואל, who follows the רבנן, is answered with a גזירה in case the roof shrinks, which is noticeable for a קרפף but not for a roof. Finally, רב יהודה begins listing the domains according to רבי מאיר, and his list continues on the next amud.

Opening lines

The steps (18)

1. StatementEnd of רב's reason: the ship has walls
2. Statementשמואל: only four cubits, since the walls keep out water
3. QuestionAsking שמואל which view is the הלכה
4. Responseשמואל answers: the הלכה follows רב
5. Statementרב agrees about an overturned ship
6. QuestionWhy was the ship turned over?
7. RejectionNot for living under it, which would match a lone roof
8. ResolutionIt was turned over to coat it with tar
9. StatementTwo versions of where the teaching belongs
10. Statementרב and שמואל argue about a portico in a field
11. StatementThe reason: does the roof edge count as a wall?
12. ChallengeChallenge to רב: why not carry from roof to courtyard?
13. ResolutionAnswer: a decree because of רב יצחק בר אבדימי
14. ChallengeChallenge to שמואל: why not carry from roof to enclosure?
15. ResolutionAnswer: a decree in case the roof shrinks
16. ChallengeThen carrying between two enclosures should also be forbidden
17. ResolutionA shrinking enclosure is noticeable, but a shrinking roof is not
18. Statementרב יהודה begins his summary of the domains according to רבי מאיר