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If korban Pesach (פסח) overrides Shabbos (שבת), why can someone simply declare their money ownerless to avoid the obligation entirely? The shiur develops the Chasam Sofer's distinction between mitzvos you can avoid your whole life versus unavoidable obligations, showing that only truly unavoidable mitzvos can override Shabbos restrictions.
This shiur examines a complex passage from Masechta Shabbos (שבת) 131a discussing the halachic principle of 'halacha (הלכה) yada lasfirim' - that one who doesn't know the law is exempt from certain obligations. The discussion begins with the Chasam Sofer's question about korban Pesach (פסח): if the korban overrides Shabbos, yet Tosafos (תוספות) in Pesachim states that one without money (karchan) is exempt from korban Pesach, how can korban Pesach truly override Shabbos when one can simply declare their money ownerless (mafkir) to avoid the obligation? The shiur explores two different understandings of exemption from mitzvos. The Chasam Sofer suggests that 'halacha yada lasfirim' applies when there's no actual conflict - if one can avoid the mitzvah (מצוה) obligation entirely, there's no contradiction with Shabbos restrictions. This differs from mitzvos like tzitzis, where the obligation is constant and unavoidable when wearing a four-cornered garment. The discussion delves into the nature of different types of mitzvos: those you can avoid your entire life (like tzitzis - by not wearing four-cornered garments) versus those that create unavoidable obligations once certain conditions are met. The shiur examines whether mitzvos that can be avoided are considered 'weaker' and therefore cannot override Shabbos. A lengthy analysis follows regarding the nature of tzitzis obligations - whether it's a chovas hagavra (obligation on the person) or chovas hacheftza (obligation on the object). This fundamental distinction affects whether the mitzvah can be 'made up' at a later time. The Gemara (גמרא)'s statement that 'kol sha'ah ve'sha'ah mitzvah hi' (each moment is a mitzvah) regarding tzitzis is examined in light of this question. The shiur concludes by exploring how 'halacha yada lasfirim' functions differently depending on whether we're dealing with ongoing obligations that create new requirements each moment, versus discrete mitzvos that can be fulfilled retroactively. This analysis has broader implications for understanding the relationship between different categories of mitzvos and their relative strength in overriding other halachic considerations.
Shabbos 131a
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