Leviticus 14:13-14

13He must kill the sheep at the north side of the altar. That is where they kill the sin offering and the burnt offering. The gift is holy. It is food for the priests.

14The priest must put some of the blood on the lowest part of the person's right ear. He must put blood on the thumb of the person's right hand. And he must put blood on the big toe of the person's right foot.