Leviticus 14:13-14

13and he shall kill the he-lamb in the place where they kill the sin-offering and the burnt-offering, in the place of the sanctuary: for as the sin-offering is the priest’s, so is the trespass-offering: it is most holy. 14And the priest shall take of the blood of the trespass-offering, and the priest shall 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.