Leviticus 14:4-6

Living Bible

⁴ he shall require two living birds of a kind permitted for food, and shall take some cedar wood, a scarlet string, and some hyssop branches, to be used for the purification ceremony of the one who is healed. ⁵ The priest shall then order one of the birds killed in an earthenware pot held above running water. ⁶ The other bird, still living, shall be dipped in the blood, along with the cedar wood, the scarlet thread, and the hyssop branch.