My kid asks:

The Bavli, Eruvin 85 amud 2 just after the mishna, says that if a location is such that its resident's not being part of an eruv chatzeros doesn't prevent the eruv from taking effect for others, then that location is an unsuitable place for those others to place their eruv. It gives one exception: the gatehouse of a privately owned courtyard. Others can create an eruv without the gatehouse resident, but can nonetheless place their eruv in the gatehouse. But the courtyard is privately owned! Why would it need an eruv at all if the eruv doesn't include the gatehouse resident?

1 Answer 1


According to Rashi (whose explanation of the Mishna you are following), the gemara is teaching two separata halachos regarding the gatehouse to the private courtyard:

  1. One who lives only in the gatehouse does not need to be included in the eruv.
  2. One who lives in a regular house in the courtyard, but also owns a gatehouse, may place the eruv in the gatehouse.
  • 2
    But in #2 why is an eruv needed? There's one resident in the courtyard.
    – msh210
    Nov 3, 2020 at 21:45
  • 2
    The eruv joins this courtyard with ajoining courtyards, and allows carrying between them.
    – tcdw
    Nov 5, 2020 at 3:43

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