Leviticus 14:2-5

2“This is the law for the one afflicted with a skin disease1 on the day of his cleansing, when he is brought to the priest. 3The priest is to go outside the camp to examine him, and if the skin disease of the afflicted person has healed, 4the priest shall order that two live clean birds, cedar wood, scarlet yarn, and hyssop be brought for the one to be cleansed.

5Then the priest shall command that one of the birds be slaughtered over fresh water2 in a clay pot.