Why is a thrower liable when someone catches his object while standing still, but exempt when the catcher moves to intercept it? The shiur develops the principle that true hanachah requires active placement, not merely stopping someone else's force. Moving to catch demonstrates passive interference rather than the deliberate act of placing down required for Shabbos (שבת) liability.
This shiur provides an in-depth analysis of a sugya in Masechta Shabbos (שבת) dealing with the halachic principles of throwing and catching on Shabbos. The Gemara (גמרא) establishes that if someone throws an object and another person stands in his place and receives it (עמד במקומו וקבל), the thrower is liable. However, if the receiver moves from his original position to catch it (עקר במקומו וקבל), the thrower is exempt. Rabbi Zweig explores the fundamental question of why this distinction exists, examining the commentaries of Rashi (רש"י) and Tosafos (תוספות). The core issue revolves around whether the act of catching constitutes a proper מעשה הנחה (act of placing down) in halachic terms. Rashi explains that when someone moves to catch an object, this is not considered a true hanachah because the person is merely stopping someone else's force rather than actively placing the object down. The shiur discusses the principle that for a complete melachah of hotzaah (carrying out) on Shabbos, there must be akirah (uprooting), hotzaah (carrying), and hanachah (placing down), all performed with intent. When someone passively receives or merely interrupts another's throwing motion, this does not constitute the active placement required for liability. Rabbi Zweig also analyzes a parallel case in the Rambam (רמב"ם) involving throwing an object while holding it with a rope, which similarly demonstrates that interfering with one's own original force may not constitute proper hanachah. The shiur concludes with practical halachic implications, noting that if someone throws an object on Shabbos, others would be obligated to catch it since their catching would not constitute a forbidden hanachah, thereby preventing the thrower from completing the prohibited melachah.
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Masechta Shabbos
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Why does the Gemara say one Shabbos protects from Amalek while two Shabboses bring redemption? The shiur applies a principle from Kiddushin about repetition changing psychology: the first time doing anything is experimental, but the second demonstrates genuine desire. True Shabbos connection with Hashem requires moving beyond spiritual curiosity to authentic internalization.
