[Negaim that appear on] a karachas or a gabachas are [confined] tamei for [as long as] two weeks, and with two symptoms [they are confirmed tamei]: living skin or expansion. With living skin: either initially, at the end of the first week, at the end of the second week, [or] after [the nega] was declared tahor. With expansion: either at the end of the first week, at the end of the second week, [or] after [the nega] was declared tahor. They can become [confined] tamei for two weeks, which equal thirteen days.

Clothing is [confined] tamei for [as long as] two weeks, and with three symptoms [it is confirmed tamei]: deep green, deep red, or expansion. With deep green or deep red negaim: either initially, at the end of the first week, at the end of the second week, [or] after being declared tahor. With expansion: either at the end of the first week, at the end of the second week, [or] after being declared tahor. It is [confined] tamei for two weeks, which equal thirteen days.

Houses are [confined] tamei for [as long as] three weeks and with three symptoms: deep green, deep red, or expansion. With deep green and deep red: either initially, at the end of the first week, [or] at the end of the second week. [The nega will be confirmed] at the end of the third week, [or] after having been declared tahor. With expansion: [either] at the end of the first week, at the end of the second week, at the end of the third week, [or] after becoming tahor. They are [confined] tamei for three weeks, which equal nineteen days. No negaim [remain confined] for less than a week nor for more than three weeks.

There are [stringencies] that apply to white hair which do not apply to expansion, and there are [stringencies] that apply to expansion which do not apply to white hair: White hair renders tumah initially, renders tamei with any shade of white, and has no symptom whereby it is tahor. There are [stringencies] that apply to expansion: Expansion renders tamei with any amount, renders all negaim tamei, [and renders tamei when it spread] outside the nega, which is not the case with white hairs.