Eruvin 71b

עירובין ע״א ע״ב

Learn Eruvin 71b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

Partnerships in wine and oil for a שיתוף: connection of liquids, ברירה, and relying on a שיתוף in place of an עירוב

Overview

רב יוסף explains the משנה's dispute about a partnership in wine and oil. He says it is the same argument as the one between רבי יוחנן בן נורי and the רבנן: whether oil floating on wine counts as connected to it. Next, a ברייתא brings רבי אליעזר בן תדאי, who requires an עירוב even when both partners share wine. רבה explains that everyone agrees wine poured from each partner's jug into one barrel works. The argument is only about a barrel bought together, and it depends on ברירה. רב יוסף instead says the argument is whether we may rely on a שיתוף in place of an עירוב. He proves this from רב, who ruled like both רבי מאיר and רבי אליעזר בן תדאי. אביי asks why רב needed two rulings, and the answer is that in עירובין we do not take on two stringencies automatically. The גמרא then quotes the ברייתא of רבי מאיר and the חכמים, and רבי נחומי and רבה begin to argue about when that dispute applies. The second opinion comes on the next amud.

Opening lines

The steps (16)

1. Statementרב יוסף links the dispute to a different known argument
2. ProofThe source: oil floating on wine touched by a טבול יום
3. ConclusionMatching each side to its parallel
4. Statementרבי אליעזר בן תדאי: both cases need an עירוב
5. QuestionSurprise: even wine with wine?
6. Responseרבה: if both poured into one container, everyone agrees
7. ResponseWhere they really argue: a barrel bought together
8. Responseרב יוסף's different explanation of the argument
9. ResponseSpelling out each side according to רב יוסף
10. Proofרב יוסף's proof from two rulings of רב
11. Challengeאביי asks why two rulings were needed
12. ResolutionThe two rulings teach that we do not combine two stringencies
13. QuestionWhat exactly do רבי מאיר and the רבנן say?
14. ResponseWhat foods are used for an עירוב and for a שיתוף
15. Responseרבי מאיר requires both; the חכמים say one is enough
16. Statementרבי נחומי and רבה argue where the dispute applies