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Eruvin 87b

עירובין פ״ז ע״ב

Learn Eruvin 87b step by step: Aramaic beside English, every question, answer and proof colour-coded.

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Topic

Passing objects through a מקום פטור between domains, the water-channel dispute, and drawing water from a balcony over water on שבת

Overview

This amud joins a sugya already in progress about moving objects between two domains by passing them through a small exempt spot (מקום פטור). The גמרא first says that רב דימי's ban on exchanging through such a spot applies only to Torah-level domains, not to רשויות דרבנן. It then challenges this with the משנה of a wall between two courtyards. On that משנה, רבי יוחנן rules that for a wall under four טפחים wide, each side may use it but may not exchange. The גמרא answers that this strict version of רבי יוחנן is זעירי's tradition, not רב דימי's. It then explains how זעירי reads the earlier water-channel ruling and defends that reading with the question of whether a כרמלית has 'holes'. רבינא offers a different reading, tied to the known dispute about לבוד. A new משנה follows about drawing water through a balcony over water on שבת, which requires a ten-טפח partition. The גמרא contrasts this with חנניא בן עקביא, whose leniency applied only at ים טבריא. It begins explaining his three leniencies for the people of טבריא, and the explanation of storing produce in pods continues on the next amud.

Opening lines

הָכָא רְשׁוּיוֹת דְּרַבָּנַן.

Here, it is domains of rabbinic law.

וְהָא רַבִּי יוֹחָנָן

But surely Rabbi Yochanan

בָּרְשׁוּיוֹת דְּרַבָּנַן נָמֵי אָמַר, (דְּתַנְיָא):

said it even regarding rabbinic domains, as we learned:

כּוֹתֶל שֶׁבֵּין שְׁתֵּי חֲצֵירוֹת,

A wall that is between two courtyards,

The steps (26)

  1. ResolutionHere the domains are only rabbinic
  2. ChallengeBut רבי יוחנן is strict even with rabbinic domains
  3. ProofFruit on top of the wall
  4. ProofIf the wall is breached
  5. QuestionWhat if the wall is less than four handbreadths wide?
  6. Responseרב: both courtyards control it, so nothing may be moved
  7. Responseרבי יוחנן: each side may bring food up and eat
  8. Proofרבי יוחנן is consistent: no swapping through an exempt spot
  9. ResolutionThe wall ruling was reported by זעירי, not רב דימי
  10. ChallengeBut for זעירי, the earlier case is still a problem
  11. Resolutionזעירי reads the water-channel ruling as being about the channel's own width
  12. ChallengeShouldn't the narrow channel count as a 'hole' of the larger כרמלית?
  13. ResolutionA כרמלית has no 'holes'
  14. ResolutionHoles count only when they are right next to the כרמלית
  15. Resolutionרבינא: The measurements refer to openings in the partitions
  16. ConclusionEach side follows its known view on לבוד
  17. Statementמשנה: A balcony over water needs a ten-טפח partition
  18. Statementמשנה: Two balconies, one above the other
  19. StatementOur משנה does not follow חנניא בן עקביא
  20. StatementThe leniency applies only to ים טבריא
  21. StatementThree leniencies for the people of טבריא
  22. ResponseThe first item is the balcony case already discussed
  23. QuestionWhat does storing in pods mean?
  24. ResponseA ברייתא about collecting residue with dew on it
  25. ResponseBringing in the residue only to save work time does not count
  26. ResponseTurning to the unspecified case