Leviticus 14:4-8

4the priest will order that two live clean birds, cedar wood, scarlet yarn, and hyssop be brought for the one who is to be cleansed.

5Then the priest will order that one of the birds be slaughtered over fresh water in a clay pot.

6He is to take the live bird together with the cedar wood, scarlet yarn, and hyssop, and dip them all into the blood of the bird that was slaughtered over the fresh water.

7He will then sprinkle the blood seven times on the one who is to be cleansed from the skin disease. He is to pronounce him clean and release the live bird over the open countryside.

8The one who is to be cleansed must wash his clothes, shave off all his hair, and bathe with water; he is clean. Afterward he may enter the camp, but he must remain outside his tent for seven days.