Negaim 7:3-4

Negaim 7:3

Let’s say that there were no signs of impurity in a white spot. At the beginning or at the end of the first week, one is quarantined; at the end of the second week or after being released, one is released. If the kohein was about to quarantine or release him and signs of impurity appeared, the kohein confirms him as unclean. If a white spot has signs of impurity, the kohein confirms him as unclean. Let’s say that the kohein was confirming him and the signs of impurity disappeared. At the beginning or at the end of the first week, he quarantines him; at the end of the second week or after the affected person has been pronounced clean, he is released.

Negaim 7:4

If a person plucks out signs of impurity or burns healthy flesh, he violates a Torah prohibition. As far as ritual purity, if he did so before going to the kohein, he is ritually clean; after being declared unclean, he is unclean. Rabbi Akiva asked Rabban Gamliel and Rabbi Yehoshua while they traveling to Gadvad about if one plucked out the signs of impurity while under quarantine. They replied that they hadn’t heard anything on this but they did hear that if he plucked them out before going to the kohein, he is ritually clean, and if after being declared unclean, he is unclean. Rabbi Akiva began to offer proofs that whether the affected person stands before the kohein or is quarantined, he is ritually clean until the kohein confirms him as unclean. Rabbi Eliezer says that one who plucked out signs of impurity may be purified after another nega appears, from which he is purified; the Sages say he can only be purified after another nega spreads over his entire body or his white spot shrinks to smaller than the size of a split bean.