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Why does the Gemara (גמרא) ask a contradiction between Truma (where matana al menas lehachzir works) and Mekach u'Memkar (where it doesn't)? The shiur develops that matana al menas lehachzir isn't about value—it's about whether there's a "nisina" (act of giving). From Esrog we learn matana al menas lehachzir can even transfer ownership, fundamentally reframing how this mechanism works in Kidushin, Pidyon Haben, and Kinyan Chalipin.
The shiur analyzes Kiddushin 6b, focusing on the Gemara (גמרא)'s treatment of matana al menas lehachzir (a gift given on condition that it be returned) and the Rambam (רמב"ם)'s seemingly inconsistent presentations of this concept across different halachic contexts. Rabbi Zweig begins by questioning why the Gemara presents the sugya as a contradiction between Rava's positions rather than asking directly how Rava can hold that matana al menas lehachzir doesn't work for Mekach u'Memkar when he holds it does work. The answer reveals the Gemara is teaching us something fundamental about the nature of matana al menas lehachzir itself. The central question is why the Gemara compares Truma (where matana al menas lehachzir is considered shmo matana—a valid gift) to Mekach u'Memkar, Kidushin, and Pidyon Haben (where according to one view it is lo shmo matana—not a valid gift). This comparison seems illogical because in Truma one need only hand over the object without transferring any monetary value, whereas in the other cases one must transfer actual value. Why should Truma be the starting point?
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Kiddushin 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.
