According to the Magen Avraham, why does making a courtyard eruv with houses disqualify the alleyway — and does this affect the ruling when the alleyway has a tzurat hapetach or two pasin?
Synopsis
The Magen Avraham explains the Rambam's reasoning based on the rule that a mavo is only permitted via lechi/korah when both houses and courtyards open into it. When courtyards merge with houses, no proper courtyards remain, disqualifying the alleyway — unless it was set up with a stronger enclosure.
More in Eruv Techumin Using an Agent
When courtyards have not made an eruv with each other and there has been no shituf mavo (alleyway partnership), but each courtyard did make an eruv with its own houses — may one carry items through the entire mavo that spent Shabbat in the courtyard or alleyway?
5 opinions
Does the Rambam's stringency (restricting carrying in the alleyway when courtyards made an eruv with houses) apply even when the alleyway is set up with a tzurat hapetach (complete doorframe) rather than just a lechi or korah?
1 opinions
When courtyards did not make an eruv with each other and no shituf mavo was made, may one carry items from a courtyard into the alleyway (not just items that were already in the alleyway)?
2 opinions
Does the Aruch HaShulchan accept the Rambam's ruling, or does he follow the majority of Rishonim against the Rambam?
1 opinions
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Discussion
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