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When can shaveh kesef (goods worth money) substitute for actual kesef (money) in kiddushin? The Gemara (גמרא) presents two views: Rav Yosef requires shuma (prior valuation) so the woman knows the exact value she's accepting, while Rabba holds that her acceptance itself creates the equivalence. This fundamental dispute extends to pidyon haben and eved ivri, revealing whether shaveh kesef needs an ascertainable value to function as kesef.
Rabbi Zweig delivers an intricate analysis of Kiddushin 7b-8a, focusing on the fundamental question of when shaveh kesef (goods with monetary value) can substitute for actual kesef (money) in effectuating kiddushin. The shiur explores a fundamental machloket between Rav Yosef and Rabba regarding whether shuma (valuation) must be done beforehand. The shiur begins by establishing Rashi (רש"י)'s understanding of the Gemara (גמרא)'s cases. Rashi distinguishes between two scenarios: (1) saying "hiskadshi li b'chamishim" (be betrothed to me with fifty) and giving an object instead, versus (2) saying "hiskadshi li b'zu" (be betrothed to me with this) where the object happens to be worth fifty. According to Rashi, the first case requires shuma beforehand according to Rav Yosef, while the second case would not require prior shuma because you're being mekadesh with the object itself, not with a monetary value.
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Kiddushin 7b-8a
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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.
