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Why is the poor person liable for hotza'ah when catching charity if proper hanacha requires a four-by-four space? The shiur analyzes the principle of klutah k'mishun chadamya - that catching equals placing - and explores whether this satisfies spatial requirements or only applies when objects cross domains.
This shiur presents a comprehensive examination of one of the most challenging sugyos in Masechta Shabbos (שבת), dealing with the fundamental requirements for transgressing the melacha of hotza'ah (carrying) on Shabbos. The Gemara (גמרא) begins with the case of a poor person extending his hand to receive charity, questioning why this constitutes a violation when there appears to be no proper hanacha (placing) in a significant place. The Gemara establishes that proper hanacha requires mokom dalet al dalet (a space of four handbreadths by four handbreadths) based on the principle that Shabbos laws are derived from the construction of the Mishkan, where significant actions occurred in significant spaces. Rashi (רש"י) explains this requirement as reflecting the natural way people place objects - ein derech l'haniach (it is not customary to place) an object in an insignificant space.
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Shabbos 4a
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