Leviticus 14:15-18

15The kohen shall then take some of the pint of oil and pour it into the palm of his own left hand.

16He is to dip his right finger in the oil that is in his left hand and sprinkle some of the oil with his finger seven times before Adonai.

17Then the kohen shall dab some of the rest of the oil that is in his hand on the tip of the right ear of the one being cleansed, on the thumb of his right hand and on the big toe of his right foot, on top of the blood of the trespass offering.

18From what remains of the oil that is in his hand, the kohen is to dab on the head of the one being cleansed. In this way the kohen will make atonement for him before Adonai.