Rav Yitzchak bar Bisna's Lost Keys

Rav Yitzchak bar Bisna was the gabbai in charge of opening the doors to the beis midrash. He did his job without fail, until one fateful day when he lost his keys. He realized on Shabbos that he had dropped the keys in a public thoroughfare. He could not carry the keys to open the doors because that would violate the melachah of hotza’ah, transporting items.

Rav Yitzchak approached Rebbe Pedas for advice. Rebbe Pedas advised him to take some children to play in the vicinity of the keys and then lead them back to the beis midrash. Inevitably, one of the kids would pick up the keys and bring them there.