Leviticus 8:23; Exodus 29:20

23 And he killed it, and Moses took some of its blood and nput it on the lobe of Aaron's right ear and on the thumb of his right hand and on the big toe of his right foot.

20 and you shall kill the ram and take part of its blood and put it on the tip of the right ear of Aaron and on the tips of the right ears of his sons, and on the thumbs of their right hands and on the great toes of their right feet, and throw the rest of the blood against the sides of the altar.