[If a Nega (diseased patch on skin, clothes, or houses that creates impurity) completely] spreads over the impure [body], it becomes pure. [If] the tips of the limbs return [from being covered], it becomes impure until his Baheret [type of diseased patch that creates impurity] diminishes to less than [the size of] a bean. [If it spread over] the pure [body], it becomes impure. [If] the tips of the limbs return [from being covered], it becomes impure until his Baheret returns to what it was.

A Baheret like [the size of] a bean with a healthy patch of skin in it, if [the Baheret] spread over his entire [body] and afterwards the patch went away, or the patch went away and afterwards [the Baheret] spread over his entire [body], he becomes pure. If [subsequently] he develops a healthy patch of skin, he is impure. If he develops white hair, Rabbi Yehoshua declares impure but the Sages declare pure.

A Baheret with white hair in it that spread over his entire [body], even though the white hair [remains] in its place, he becomes pure. A Baheret that has expansion, if it spread over his entire [body] he becomes pure. And for all of [these cases], if the tips of his limbs return [from being covered by the Baheret], they become impure. [If] it spread over part of his [body], it becomes impure. [If] it spread over his entire [body], it becomes pure.

Any spreading over the tips of those limbs whose spreading purifies what is impure, when they return [from being covered] they are impure. Any returning of the tips of those limbs [from being covered] whose returning makes impure what is pure, if they were covered [again], he becomes pure. If they [then] became revealed, he becomes impure, even [if this were repeated] one hundred times.

Any [part of the body] that is valid for making the Nega of the Baheret impure prevents the spreading [over the entire body from making him pure]. Any [part of the body] that is not valid for making the Nega of the Baheret impure does not prevent the spreading [over the entire body from making him pure]. How so? [If] it spread over his entire [body] but not over his head or his beard [or] his boil, burn or blister that is unhealed [making him pure], and [then] his head or beard returned and balded, or the boil, burn or healing-resistant blister [returned] and developed a scab, they are [still] pure. [If] it spread over his entire [body] but not over the [area the size of] half a lentil that is adjacent to his head or his beard, or his boil, burn or blister [and then] his head or beard returned and balded, or his boil, burn, or blister [returned] and developed a scab, even if the spot of the healthy skin [that is half a lentil wide] became a Baheret, he is impure until it spreads over everything [including the newly opened areas].

Two Beharot, one impure and one pure, [if the Nega] spread from this one to the other one, and afterwards it spread over his entire [body], he becomes pure. [If one was] on his upper lip [and the other] on his lower lip, [or] on two of his fingers, [or] on two [halves] of his eyelids, even though they are stuck together this one to the other one and they appear like one [Baheret], he becomes pure [if it later spreads over his entire body]. If it spread over his entire [body] but not over [an area with] a Bohak [dull blemish], he becomes impure, [but if] the tips of the limbs returned [from being covered and became] a sort of Bohak, he is [still] pure. [If] the tips of the limbs returned from [an area] less than a lentil, Rabbi Meir declares impure. But the Sages say: A Bohak less than [the size of] a lentil is a sign of impurity in the beginning, but is not a sign of impurity in the end.

[If] he comes in [to the priest initially] completely white [with a Nega], he should be quarantined. [If] he develops [two] white hairs, he should be decided [as impure]. [If later] both of them blacken or [only] one of them, [or] both of them shorten or [only] one of them, [or] a boil becomes adjacent to both of them or to one of them, [or] a boil surrounds both of them or one of them, or [the boil] divides them, [whether it was] a boil, a partially healed boil, a burn, a partially healed burn, or a Bohak, [he is pure]. [If] he [instead] develops a patch of healthy skin or white hair, he is impure. If he does not develop a patch of healthy skin nor white hair, he is pure. But in all cases in which the tips of his limbs returned [from being covered], behold they are like they were [in terms of purity status]. If [the Nega] spread over part of his [body], he is impure. [If] it spread of his entire [body], behold he becomes pure.

If it spread of his entire [body] at once, from [a state of] purity, he becomes impure. From [a state of] impurity, he becomes pure. [A person with a Nega] who is pure from being quarantined is exempt from growing out [his hair], or from ripping [his clothing], or from shaving, or from [bringing] birds [as sacrifices]. [If he became pure] from [a state of] being decided [as impure], he is obligated in all of them. Both of these make [their partners] impure through sexual relations.

Someone who comes in [to the priest initially] completely white [with a Nega, except for] a healthy patch of skin upon him [the size of] a lentil, [if afterwards it] spread over his entire [body] and then the tips of his limbs returned [from being covered], Rabbi Yishmael says: [The law is the same as] the tips of the limbs returning [from being covered] in the case of a great Baheret. Rabbi Elazar ben Azaria says: [The law is the same as] the tips of the limbs returning [from being covered] in the case of a small Baheret.

There is [a case] of [one] showing his Nega to the priest and benefiting, and there is [a case] where he shows and loses. How so? One who was decided [as impure] and then his signs of impurity went away, if he did not manage to show it to the priest before it spread over his entire [body], he becomes pure, for if he had shown it to the priest, he would have become impure [after it spread over his body]. A Baheret with nothing in it, if he did not manage to show it to the priest before it spread over his entire [body], he is [quarantined for] impurity, for if he had shown it to the priest, he would have become pure [after it spread over his body].