Leviticus 14:25
And he shall kill the lamb of the trespass offering, and the priest shall take some of the blood of the trespass offering, and put it upon the tip of the right ear of him that is to be cleansed, and upon the thumb of his right hand, and upon the great toe of his right foot:
More from Leviticus 14
And the LORD spake unto Moses, saying,
This shall be the law of the leper in the day of his cleansing: He shall be brought unto the priest:
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;
Then shall the priest command to take for him that is to be cleansed two birds alive and clean, and cedar wood, and scarlet, and hyssop:
And the priest shall command that one of the birds be killed in an earthen vessel over running water: