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When must a woman's testimony be supported by both chazakah and borei together? The shiur analyzes a complex Tosafos (תוספות) exploring whether the reisha and seifa teach separate chiddushim about Rav Gamaliel's position. The analysis reveals fundamental disagreements between Rashi (רש"י) and Tosafos about when chazakah alone suffices versus requiring additional borei testimony.
This shiur provides an in-depth analysis of Masechta Kesubos 13b, focusing on the intricate mechanics of testimony in cases involving questions of lineage and kashrus. The central discussion revolves around a complex Tosafos (תוספות) that examines the relationship between chazakah (presumptive status) and borei (clear testimony) in determining when a woman's word is accepted. The Gemara (גמרא) discusses two cases: the reisha (where a woman is not pregnant) and the seifa (where she is pregnant/muberes). Rabbi Zweig explains that Tosafos grapples with why the Gemara needs both cases, leading to the principle of 'chad l'hachshiv bah, chad l'hachshiv bitah' - one case to make her kosher, one for her daughter. However, Tosafos questions this logic: if the daughter (who lacks chazakah) can be made kosher through the mother's testimony, surely the mother herself (who has chazakah) should be kosher as well.
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Kesubos 13b
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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.
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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.
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