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Why do some mitzvos override Shabbos (שבת) restrictions while others don't? The shiur develops a fundamental distinction between two types of dechiya: mitzvos required by the holy day itself (like Lulav on Yom Tov) versus mitzvos whose inherent importance overrides Shabbos (like milah). This chakira resolves apparent contradictions in Shabbos 131b about which mitzvos are "more stringent."
This shiur provides an in-depth analysis of Masechta Shabbos (שבת) 131b, focusing on a fundamental dispute between Rashi (רש"י) and Tosafot regarding the mechanisms by which certain mitzvos override Sabbath restrictions. The Gemara (גמרא) presents a complex discussion about learning halachot through gezeirah shavah (verbal analogy) and binyan av (inductive reasoning) from various mitzvos like Sukkah, Lulav, Omer, and Shtei HaLechem. Rabbi Zweig explains that Rashi holds there is a principle called "gili milta" (revealed matter) - when we already know a halacha (הלכה) from other sources, we can derive similar cases through gezeirah shavah even when it's not mufneh (the comparative word is not extra/free). This contrasts with the general rule that gezeirah shavah requires mufneh status to avoid refutation (pircha).
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Shabbos 131b
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