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What makes an action where you perform the deed but don't want the result (psik reisha d'lo nicha lei) different from regular melacha she'ein tzricha l'gufa? Tosfos argues it should be prohibited mid'rabbanan like melacha she'ein tzricha l'gufa, while the Orach holds it's permitted as dvar she'ein miskaven. The analysis reveals a fundamental distinction between intending the act versus intending the creative purpose of the melacha.
This shiur provides an in-depth analysis of a complex Tosfos on Kesubos 6a regarding the halachic status of psik reisha d'lo nicha lei (inevitable consequence that one doesn't desire). The discussion centers on a case where someone stuffs a wet cloth into a barrel opening, which will inevitably squeeze out liquid (s'chita/mefareik), though that's not the person's intent. Tosfos challenges the Orach's position that psik reisha d'lo nicha lei should be permitted as dvar she'ein miskaven (unintentional action). Instead, Tosfos argues it should be prohibited mid'rabbanan, similar to melacha she'ein tzricha l'gufa (work not needed for its essential purpose). The shiur explores the fundamental question of what distinguishes these two categories.
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Why does halacha forbid entering dangerous places if everything happens by Divine decree? The shiur examines the debate between Rashi and Tosfos on traveling at night, developing a fundamental distinction: Rashi holds one must avoid even deserved punishments that Hashem delays through mercy, while Tosfos holds the prohibition addresses self-inflicted harm through free will. This framework reveals how people rationalize self-destructive behavior as "hashgacha."
Why does the Gemara praise hospitality to scholars as a unique mitzvah rather than ordinary hachnasas orchim? The shiur distinguishes two mitzvahs: hachnasas orchim (providing for those in need) and connecting to talmidei chachamim (cleaving to God through scholars). Yisro's meal for the Jewish leaders wasn't charity—it was his way of bonding with those transformed by Torah, teaching that learning must fundamentally change who we are.
Kesubos 6a
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