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Can an egg laid on Shabbos (שבת) be eaten on Yom Tov that follows? The shiur analyzes a fundamental dispute between Tosafos (תוספות) and the Ran about what constitutes "hachana"—preparation. The Ran introduces a new concept: taking off an issur itself creates hachana, while Tosafos holds hachana requires actual preparation from chol.
This shiur provides an in-depth analysis of Gemara (גמרא) Beitzah 4a, focusing on the complex dispute between Tosafos (תוספות), the Ran, and the Maharsha regarding the concept of hachana (preparation). The central question is whether an egg laid on Shabbos (שבת) may be eaten on Yom Tov that immediately follows on Sunday. The Gemara presents a machlokes between Rabbah and Rav Yochanan about an egg born on one day of Yom Tov being eaten on the next. According to Rabbah, it is forbidden because of hachana—one day is preparing for the next. Tosafos asks a fundamental question: if the issue is hachana, what about an egg laid on Shabbos before Yom Tov? The egg was completed (nigmar) on Friday, before Shabbos, so where is the hachana problem?
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Beitzah 4a
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