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Why must proceeds from selling a synagogue buy an ark, and ark proceeds buy Torah (תורה) scrolls? Megillah 25b establishes the principle ma'alin bekodesh v'lo moridin - sacred money must purchase items of equal or greater sanctity. The machloket between the Magen Avrohom and Gra reveals whether this reflects the inherent kedushah of the money itself or concerns for kavod hamitzvah.
This shiur presents an in-depth analysis of Gemara (גמרא) Megillah 25b, focusing on the fundamental principle of ma'alin bekodesh v'lo moridin (we elevate in holiness and do not diminish). The Gemara discusses the Mishna's ruling that residents of a city (bnei ha'ir) who sell a street where they pray (rechov ir) must use the proceeds to purchase a synagogue, which has greater sanctity. The hierarchical order continues: synagogue proceeds must purchase an ark (teiva), ark proceeds for Torah (תורה) coverings (mitpachot), coverings for Torah scrolls (sfarim), and scroll proceeds for a complete Sefer Torah. Rashi (רש"י)'s commentary, citing a Tosefta, explains that this entire framework derives from the principle ma'alin bekodesh lo moridin - once something has sanctity, it cannot be exchanged for something of lesser holiness. The source for this principle comes from two biblical precedents: Moshe Rabbeinu's construction of the Mishkan (rather than allowing others to build it) and the fashioning of the mizbeach's covering from the brass mirrors of the sinful women, demonstrating that sacred items must maintain or increase their level of sanctity.
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Megillah 25b
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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.
