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Why does the Torah (תורה) juxtapose shatnez and tzitzis? The shiur analyzes Tosafot's understanding of smucha (juxtaposition), exploring whether it creates a complete fusion of parshiyot or merely a reconciliation. Through detailed analysis of shatnez-tzitzis, Shabbos (שבת), and Pesach (פסח), Rabbi Zweig develops the conceptual mechanics of how smucha works compared to hekesh.
This shiur undertakes a deep analysis of Tosafot on Yevamos 4a concerning the relationship between shatnez (prohibition of mixing wool and linen) and tzitzis (the mitzvah (מצוה) of ritual fringes). The central question is how to understand the principle of smucha (juxtaposition of Torah (תורה) passages) and what legal inferences can be drawn from the Torah placing two commandments adjacent to each other. Rabbi Zweig begins by examining the basic question: without an explicit pasuk, would the mitzvah of tzitzis override the prohibition of shatnez? Tosafot raises the possibility that without the pasuk explicitly stating this, one might think the issuer (prohibition) would not be docheh (overridden by) the aseh (positive commandment). The shiur explores what this means—whether it indicates uncertainty about which takes precedence, or an actual ruling that the issuer would remain in force.
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Yevamos 4a
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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.
