Leviticus 14:25-28

Then the priest will slaughter the lamb for the guilt offering. He will take some of its blood and apply it to the lobe of the right ear, the thumb of the right hand, and the big toe of the right foot of the person being purified. “The priest will also pour some of the olive oil into the palm of his own left hand. He will dip his right finger into the oil in his palm and sprinkle some of it seven times before the LORD. The priest will then apply some of the oil in his palm over the blood from the guilt offering that is on the lobe of the right ear, the thumb of the right hand, and the big toe of the right foot of the person being purified.