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Why does the Rambam (רמב"ם) introduce the concept of kinuyim differently in Hilchos Nedarim than in Hilchos Shevuos? The shiur analyzes the Rambam's structure, arguing that kinuyim in nedarim encompasses two separate halachos: substitute words for the chefetz (object) being forbidden work in any language, while substitute words for "korban" itself must point to lashon hakodesh because they create an objective halachic chalos, not merely a personal commitment.
This shiur presents a comprehensive analysis of the Rambam (רמב"ם)'s treatment of kinuyim (substitute language) in nedarim, addressing fundamental questions about why kinuyim are presented differently in Hilchos Shevuos versus Hilchos Nedarim, and why the Mishna gives specific examples rather than stating the general rule that nedarim can be expressed in any language. Rabbi Zweig begins by highlighting a structural puzzle in the Rambam. In Hilchos Shevuos (2:5), the Rambam immediately introduces kinuyei shevua (substitute words for oaths) without any preamble. However, in Hilchos Nedarim (1:16), he opens with a lengthy introduction: "Yesh b'kol mi she'ansheim al logim u'masidim es halashon u'mchanim al davar b'davar acher" — there are people who cannot pronounce words properly or who substitute one word for another, which is called a kinui. Why does the Rambam provide this explanation only in Hilchos Nedarim? Furthermore, the Rambam in Hilchos Nedarim mentions the limitation that kinuyim only work "b'oso makom b'oso zman" (in that place at that time), but this detail is omitted in Hilchos Shevuos. These inconsistencies demand explanation.
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Nedarim 2a
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