Leviticus 14:25-28

And he shall kill the lamb of the guilt offering. And the priest shall take some of the blood of the guilt offering and put it on the lobe of the right ear of him who is to be cleansed, and on the thumb of his right hand and on the big toe of his right foot. And the priest shall pour some of the oil into the palm of his own left hand, and 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 some of the oil that is in his hand on the lobe of the right ear of him who is to be cleansed and on the thumb of his right hand and on the big toe of his right foot, in the place where the blood of the guilt offering was put.