Leaving One's Home Unfinished Zecher LeChurban: Does it Have to Be Adjacent to the Doorway? - Jan 8, 2024 - The obligation of leavings one home unfinished, Zecher Lechurban. Does it have to be adjacent to the Doorway?
Gemara Bava Batra 60b details the rabbinic institutions that Chazal made as a commemoration of the Churban.
Rambam (Taanit 5:12)
Shulchan Aruch (560:1)