Does chametz that was nullified (batel b'shishim) before Pesach revive and become forbidden on Pesach (chozer v'ne'or)?
Synopsis
The Mechaber records two views: the primary ruling is that chametz nullified in 1:60 before Pesach does not revive on Pesach. A dissenting view holds it does revive. The Rema says the custom follows the first (lenient) opinion for liquid-in-liquid mixtures, but for dry items mixed in, the mixture is forbidden on Pesach.
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