Leviticus 14:4

1 Yahweh spoke to Moses, saying,

2 This shall be the law of the leper in the day of his cleansing: he shall be brought to the priest:

3 and the priest shall go forth out of the camp; and the priest shall look; and, behold, if the plague of leprosy be healed in the leper,

4 then shall the priest command to take for him who is to be cleansed two living clean birds, and cedar wood, and scarlet, and hyssop:

5 The priest shall command to kill one of the birds in an earthen vessel over running water.

6 As for the living bird, he shall take it, and the cedar wood, and the scarlet, and the hyssop, and shall dip them and the living bird in the blood of the bird that was killed over the running water:

7 He shall sprinkle on him who is to be cleansed from the leprosy seven times, and shall pronounce him clean, and shall let go the living bird into the open field.