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Eruvin 89a

עירובין פ״ט ע״א

Learn Eruvin 89a step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

The end of פרק כיצד משתתפין and the opening of פרק כל גגות: whether roofs are one רשות, רבי מאיר's ten-טפחים גזירה, and the רב–שמואל dispute about carrying on a single roof.

Overview

The amud opens by finishing the previous chapter. The ban on pouring water applies only when no עירוב was made, and רב אשי explains that it is a גזירה so people will not carry water vessels out of their houses. After the הדרן, a new chapter begins with a משנה about roofs. רבי מאיר says all the city's roofs are one רשות, unless a roof is ten טפחים higher or lower than its neighbor. The חכמים say each roof is its own רשות, and רבי שמעון joins roofs, courtyards and קרפיפות together for objects that began שבת there. The גמרא asks why רבי מאיר has the ten-טפחים exception, and אביי answers that it is only a גזירה because of a mound in the רשות הרבים. אביי limits this גזירה to fixed objects. When challenged from a wall between courtyards, רב ששת explains that רבי מאיר allows carrying only through the doorways. Finally, רב and שמואל argue about carrying within a single roof according to the חכמים, and the argument depends on גוד אסיק מחיצתא. The גמרא then begins quoting the משנה to test that dispute, and the test continues on the next amud.

Opening lines

לֹא שָׁנוּ אֶלָּא שֶׁלֹּא עֵירְבוּ,

They only taught this when they did not make an eruv,

אֲבָל עֵירְבוּ — מוּתָּרִין.

but if they made an eruv, they are all permitted.

וְכִי לֹא עֵירְבוּ,

And when they did not make an eruv,

מַאי טַעְמָא לָא?

what is the reason they may not pour?

The steps (18)

  1. StatementThe ban applies only without a joint עירוב
  2. QuestionWhy is pouring forbidden without a עירוב?
  3. Responseרב אשי: a protective decree against carrying vessels
  4. Conclusionהדרן — Closing the chapter of כיצד משתתפין
  5. Statementרבי מאיר: all the city's roofs are one domain
  6. StatementThe Sages: each roof is its own domain
  7. StatementA third view: roofs, courtyards and enclosed lots are all one area
  8. StatementThe scholars agree the רבנן's view makes sense
  9. ChallengeEither way, רבי מאיר's view seems not to fit
  10. Resolutionאביי: the ten-handbreadth rule is a rabbinic decree
  11. StatementThe scholars conclude that even portable objects are included
  12. Rejectionאביי limits the rule to fixed objects
  13. ChallengeChallenge from the wall between two courtyards
  14. ResolutionThe courtyards are one domain only through the doorways
  15. Statementרב and שמואל disagree about carrying on one roof for the חכמים
  16. StatementThe dispute is only where the walls cannot be seen
  17. StatementThe dispute depends on extending the walls upward
  18. ChallengeThe גמרא starts quoting the משנה to test the dispute