Reference for Makkot 26:7

לאו שניתק לעשה נמי דומיא דלאו דחסימה

A prohibition remedied by an positive commandment should also [be liable to malkus, something which we know isn't true]? [All malkus prohibitions must] similar to the prohibition of muzzling (Deuteronomy 25,4). [The prohibition of muzzling did not have a positive commandment to remedy it.]

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