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Why do Rabbi Yosi and Rabbi Yehuda disagree about interrupting meals when Shabbos (שבת) begins? The machlokes hinges on distinguishing kavod Shabbos (which can be fulfilled by continuing to eat) from seudah Shabbos (the formal meal requiring lechem mishneh and proper appetite). This framework explains why Pesach (פסח) has stricter rules requiring tayovon for matzah.
This shiur provides a comprehensive analysis of Pesachim 100a, focusing on the fundamental machlokes (disagreement) between Rabbi Yosi and Rabbi Yehuda regarding whether one must interrupt (mafsik) an ongoing meal when Shabbos (שבת) begins. Rabbi Zweig establishes a foundational distinction between kavod Shabbos (honoring Shabbos) and seudah Shabbos (the formal Shabbos meal). He explains that kavod and oneg Shabbos can be fulfilled through various means including eating, nice clothing, and lights in the house, while seudah Shabbos specifically requires lechem mishneh (two loaves) and wine according to the Rama. The shiur explores how this distinction resolves the machlokes: Rabbi Yosi holds that continuing an existing meal constitutes kavod Shabbos, so one need not interrupt (ein mafsik). Rabbi Yehuda argues that this actually constitutes bizayon Shabbos (disgracing Shabbos) because the proper seudah Shabbos should be eaten with appetite and relish, which is compromised when one is already satiated from a previous meal.
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Pesachim 100a
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