רב אושעיא

Rav Oshaya was an amora active in both Babylonia and the Land of Israel, recorded as transmitting and challenging halachic traditions across the Talmud. He appears especially often in tractate Chullin, where his questions and objections probe the fine points of ritual slaughter and purity — for example, whether an animal still twitching after slaughter conveys impurity, the status of a defect of perforation, and the examination of small-toothed creatures. He is also one who brings supporting baraitot, as when he carried a teaching from Nehardea concerning a ewe that gave birth to a goat-like offspring.

His voice recurs throughout the korabnot and taharot — in Zevachim, Temurah, Meilah, Keritot, Bekhorot, Niddah, and Zevachim — frequently in the form of an objection (matkif) or a raised difficulty (meitiv), often querying why a given case was not listed among the leniencies of Beit Shammai and stringencies of Beit Hillel. He also engages aggadic and broader halachic matters, citing a teaching in the name of Rav about Adam, transmitting a tradition through Reish Lakish about Rabbi Akiva, and appearing in legal disputes alongside colleagues such as Rav Hananya and before sages like Rava and Rav Chisda.