Leviticus 8:21-23

²¹He washed the inner parts and the legs with water, and he burned the whole ram on the altar. It was a burnt offering and produced a sweet aroma, an offering made by fire to Yahweh as Yahweh had commanded Moses.

²²Then Moses presented the other ram, the ram of consecration, and Aaron and his sons laid their hands on the head of the ram.

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