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When is an unintended consequence considered psik reisha d'lo nichlei versus melacha she'eina tzricha l'gufa? The shiur explores how Tosafos (תוספות) treats a case where tikun manah occurs while eating - questioning whether this definite consequence should be classified as psik reisha or the more stringent category of melacha she'eina tzricha l'gufa.
This advanced Gemara (גמרא) shiur examines a fundamental distinction in Shabbos (שבת) law between psik reisha d'lo nichlei (unintended inevitable consequence that brings no benefit) and melacha she'eina tzricha l'gufa (performing a melacha for a different purpose than intended). The discussion centers on a case in Kesubos 6a involving tikun manah (vessel repair) that occurs while eating. Rabbi Zweig analyzes the positions of Rav and Shmuel regarding when certain actions are permitted, with the Gemara initially suggesting this involves davar she'eina mitkaven (unintentional action). However, the analysis reveals this may actually be psik reisha - an inevitable consequence. The shiur examines Tosafos (תוספות) who characterizes this as psik reisha d'lo nichlei, meaning the repair happens inevitably but the person doesn't want or benefit from the repair itself.
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Kesubos 6a
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