May a carpenter's peg be used to lock when the threshold has sunken so the peg penetrates the earth below?
Synopsis
The Mechaber prohibits using a nagger when the threshold has lowered to the point where the peg pierces the earth beneath it, as this constitutes prohibited building. The Taz and Mishnah Berurah clarify that a pre-existing hole in the ground avoids the prohibition.
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Discussion
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