Leviticus 14:2; Leviticus 15:13

This shall be the law of the leprous person for the day of his cleansing. sHe shall be brought to the priest,

13 And when the one with a discharge is cleansed of his discharge, then lhe shall count for himself seven days for his cleansing, and wash his clothes. And he shall bathe his body in fresh water and shall be clean.