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When can a woman who had relations claim "lo nivartu" (I was not violated)? The sugya analyzes the dispute between Ziri and Rav Assi about when this claim is believed - by seclusion alone or only when actual relations are witnessed. The shiur develops the parameters of circumstantial evidence in halachic testimony.
This shiur explores a complex Gemara (גמרא) in Kesubos 13b examining when a woman's claim of "lo nivartu" (I was not violated) is believed. The Gemara presents two approaches: Ziri holds the dispute applies both to nishtara (hidden/seclusion) and nivara (witnessed relations), while Rav Assi holds the dispute only applies to nivara, but by nishtara one believes her claim with a migo (supporting argument). The discussion centers on the difference between "le-sisar" (seclusion for inappropriate conversation) and "al ha-chorva" (going to a place of immorality). Rabbi Zweig analyzes Rashi (רש"י)'s interpretation that chorva represents a ma'aseh (action) - actually going to a place of prostitution - which creates stronger circumstantial evidence than mere inappropriate conversation. This parallels the halachic principle of derech ha-mena'afim (the way of adulterers), where witnesses need not see the actual act but can testify based on compelling circumstances. The shiur develops a fundamental distinction between different types of halachic testimony. Some cases require direct witness testimony, while others accept circumstantial evidence that allows judges to use their intelligence to interpret what they observed. Rabbi Zweig illustrates this with examples from capital punishment cases, where seeing someone chase another with a knife into a cave, then finding the victim dead with the pursuer holding a bloody knife, constitutes valid testimony even without witnessing the actual killing.
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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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