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Why does the Gemara (גמרא) cite pesukim about Shabbos (שבת) violations when the core question is executing someone on Shabbos? The shiur works through Rashi (רש"י)'s approach to understanding what "lo sa'aseh kol melacha" means—whether it prohibits each melacha individually or requires doing all thirty-nine melachos together to violate Shabbos. The discussion addresses why the Gemara treats havara as only a lav and explores the concept of davar she'yatza min haklal.
This shiur provides an intensive analysis of a complex sugya in Yevamos 6b, focusing on Rashi (רש"י)'s commentary regarding "l'chalek yatza" and the broader question of what constitutes chillul Shabbos (שבת). The Gemara (גמרא) appears to be addressing a contradiction: on one hand, we have the mitzvah (מצוה) to execute criminals (vehumas), and on the other, we have the prohibition of melacha on Shabbos. The central puzzle is why the Gemara brings pesukim about bishul psila (cooking lead for execution) and havara (kindling fire) when the more fundamental question seems to be whether beis din can perform netilas neshamah (taking a life) on Shabbos. Rabbi Zweig begins by establishing the basic difficulty: if the issue is whether execution overrides Shabbos, why doesn't the Gemara directly address killing itself rather than focusing on the preparatory melachos of cooking lead or making fire? The Gemara cites "lo savor eish" (do not kindle fire) as proof that even beis din cannot perform certain acts on Shabbos. But this seems to sidestep the main question—can you kill someone on Shabbos to fulfill a mitzvah?
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Yevamos 6b
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Why does the Gemara present a kal v'chomer for chuppah making kiddushin based on kesef not being maichel b'terumah, only to reject it? The shiur reveals that even the rejected kal v'chomer establishes a fundamental yesod: kiddushin is a kinyan for ishus (marital relationship), not merely a kinyan in hilchos kinyanim. The second kal v'chomer—from chuppah being gomeres—raises Tosafos's famous question.
Is the kesef used in kiddushin a true kinyan (acquisition), or merely a symbolic means of establishing marriage? The shiur analyzes multiple interpretations of the Gemara's derivation from ki yikach ki'ach mi'Sayeffron, exploring whether marriage constitutes ownership, and develops three fundamental approaches: (1) The Gemara proves ishus is a kinyan, (2) ishus is not a kinyan but uses kinyan-like means, or (3) ishus is a kinyan but the kesef may not be a ma'aseh kinyan. The Rambam's position—calling kesef "midivrei sofrim"—is explained as distinguishing between cross-referencing concepts versus borrowing terminology.
Why does the Mishna alternate between the language of "kinyan" (acquisition) and "kiddushin" (sanctification) when describing marriage? The shiur develops a fundamental distinction: marriage has two separate aspects—a kinyan dimension (ownership) and a kedusha dimension (sanctified relationship). Either aspect can initiate the bond, and understanding this dual nature resolves multiple textual and halachic questions throughout the sugya.
Does kiddushei shetar require a shevah pruta? The Ran presents two approaches to the Rif's position. The shiur develops the Ran's second pshat that shetar kiddushin functions as a hachnah (exchange) rather than a mere kinyan nesina. This reading has profound implications for isuri hana'ah, mechubar, and the relationship between kesef and shetar.
