Leviticus 14:2-5

2“The following instructions are for those seeking ceremonial purification from a skin disease. Those who have been healed must be brought to the priest,

3who will examine them at a place outside the camp. If the priest finds that someone has been healed of a serious skin disease,

4he will perform a purification ceremony, using two live birds that are ceremonially clean, a stick of cedar, some scarlet yarn, and a hyssop branch.

5The priest will order that one bird be slaughtered over a clay pot filled with fresh water.