If the new inner wall that converted a karpeif to mukaf l'dirah subsequently falls, does the original prohibition return?

ShabbatEruvin

Synopsis

The Mechaber rules that if the new wall that permitted the karpeif falls, the prohibition returns. The Biur Halacha disputes whether this rule extends to all configurations or only when the new wall was the sole basis for permission.

Early Acharonim
Late Acharonim
Lenient
Strict
Lesser cited
Major authority

Discussion

Discussion coming soon.

The Daily Law

One question. Every opinion. Every morning.

A new halakhic question and the full spectrum of rabbinic thought, delivered daily.