Rebbe Zalman of Vilna and the Inn Without Mezuzos
Rebbe Zalman of Vilna finds invalid mezuzos at an inn for Shabbos, so the innkeeper declares the inn ownerless before three witnesses to keep his guest.
The story is told that Rebbe Zalman of Vilna was once staying at an inn for Shabbos. He noticed that the mezuzos were improperly affixed, rendering them invalid. Rebbe Zalman did not want to stay at the inn, which effectively did not have any mezuzos. Not wanting to lose his revered guest, the innkeeper declared his inn ownerless in front of three witnesses. In this way, he was able to accommodate Rebbe Zalman.