תלמוד על בבא בתרא 3:3

Rebbi Jacob bar Aḥa, Rebbi Simeon bar Abba in the name of Rebbi Joshua ben Levi: If somebody sell a cistern, when he handed over its pail [the buyer] took possession⁴³⁴The Babli, Baba qama 51b, requires a declaration by the seller that the pail is handed over for possession.. Rebbi Immi in the name of Rebbi Joḥanan: If somebody sell a house, when [the buyer] stored there, he took possession. Rebbi Jehudah ben Pazi asked, what if he handed over the key⁴³⁵In the Babli, Baba qama 51b/52a, handing over the key as sign of transfer of possession is undeniably a valid action.? Rebbi Zachariah, son-in-law of Rebbi Levi, said: This is a disagreement between Rebbi Simeon and the Sages, as we have stated there⁴³⁶Mishnah Ṭahorot 7:1.: “If somebody hand over the key to his house to an ‘am ha’areṣ⁴³⁷A person who does not keep the rules of ritual purity. If he did enter the house, any movables (food and vessels) he touches there would become impure., the house is pure since he handed to him only the guarding of the key.” It was stated⁴³⁸Tosephta Ṭahorot 8:1. He implies, against the othet Tanna, that handing over the key implies permission to use the house.: “Rebbi Simeon declares impure.”