Leviticus 14:25-28

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: and the priest shall pour of the oil into the palm of his own left hand: and the priest shall sprinkle with his right finger some of the oil that is in his left hand seven times before the LORD: and the priest shall put of the oil that is in his hand 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, upon the place of the blood of the trespass offering