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Why is moshit (carrying from balcony to balcony over reshus harabim) liable above ten tefachim when normal carrying is not? A fundamental machloket emerges between viewing moshit as a gezeirat hakatuv creating new liability in airspace versus understanding it as reshus hayachid to reshus hayachid transfer. This distinction determines whether height restrictions from the Mishkan must be maintained exactly.
This shiur provides an in-depth exploration of the complex Talmudic sugya regarding the melachah of moshit on Shabbos (שבת). Rabbi Zweig begins by establishing the basic parameters of moshit - carrying an object from one balcony to another over a reshus harabim (public domain), which differs from other forms of hotza'ah in two fundamental ways: one is liable even when carrying above ten tefachim, and liability exists only when crossing lengthwise (diyuk de'achas) rather than widthwise across the reshus harabim. The central focus is Tosafot's uncertainty about whether moshit remains prohibited when performed below ten tefachim (lemata me'asarah). Tosafot attempts to prove from our Gemara (גמרא) that one would be liable even below ten tefachim, based on the principle that if we hold 'yalfinan zorek mi'moshit' (we derive the laws of throwing from moshit), then zorek below ten tefachim should also be prohibited since moshit is liable even below ten tefachim.
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Masechta Shabbos
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