Leviticus 8:21-23

²¹when the entrails and the feet were washed before; and he burnt all the ram together upon the altar, for it was the burnt sacrifice of sweetest odour to the Lord, as the Lord commanded to him.

²²He offered also the second ram, into the hallowing of priests; and Aaron and his sons putted or put their hands upon the head thereof.

²³And when Moses had offered that ram, he took of the blood, and touched therewith the last part of the right ear of Aaron, and the thumb of his right hand, and in like manner of his foot.