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Why does the gezeirah of peres hanocher (fruit detached on Shabbos (שבת)) apply to eggs but have exceptions for certain vegetables? The shiur analyzes Rashi (רש"י), Tosafos (תוספות), and the Rambam (רמב"ם)'s three distinct approaches to defining the scope and parameters of the gezeirah shema ya'aleh v'yitlos—whether it applies only to tree fruit, up to the exertion level of aliyah, or broadly to all produce.
This shiur presents a comprehensive analysis of the Gemara (גמרא)'s discussion regarding the gezeirah of peres hanocher (fruit that detaches on Shabbos (שבת)) and its relationship to beitzah shenoldah (an egg laid on Yom Tov). The fundamental question is why the Gemara needs to invoke a separate reason of muktzeh for eggs when the gezeirah of shema ya'aleh v'yitlos should seemingly apply. The shiur explores how Rashi (רש"י), Tosafos (תוספות), and the Rambam (רמב"ם) each understand the scope and parameters of this rabbinic decree. According to Rashi, the gezeirah of peres hanocher applies specifically to fruit that grows on trees (min ha'ilan), not to produce that grows in the ground (min ha'adamah). Rashi derives this from the Gemara's language of "ya'aleh"—going up to detach fruit from a tree. The rationale is that people commonly find fruit on the ground that has fallen from trees, and seeing this available fruit might lead them to forget and pluck fruit directly from the tree. However, vegetables and other ground-growing produce are not included in this gezeirah because they don't typically fall to the ground in the same way. Regarding beitzah, Rashi explains that while eggs do fall to the ground (making them subject to the gezeirah's concern), there is no actual issur of tolesh (detaching) when removing an egg from a chicken, since the egg is nigmar (complete) and no longer growing or receiving nourishment. Nevertheless, the egg is still included in the broader gezeirah because of the pattern of finding such items on the ground.
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Beitzah 2b-3a
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