[A nega on] the skin is [confined] tamei for [as long as] two weeks, and with three symptoms [it is confirmed tamei]: white hair, living skin, or expansion. With white hair or 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. It is [confined] tamei for two weeks, which equal thirteen days.

A boil or a burn is tamei for [no more than] one week [unless it has one of these] two symptoms: white hair or expansion. With white hair: either initially, at the end of a week, [or] after [the nega] was declared tahor. With expansion: at the end of a week [or] after [the nega] was declared tahor. They can be tamei for one week, which equals seven days.