Exodus 29:20-22

New Century Version

²⁰ Kill it and take some of its blood. Put the blood on the bottom of the right ears of Aaron and his sons and on the thumbs of their right hands and on the big toes of their right feet. Then sprinkle the rest of the blood against all four sides of the altar. ²¹ Take some of the blood from the altar, and mix it with the special oil used in appointing priests. Sprinkle this on Aaron and his clothes and on his sons and their clothes. This will show that Aaron and his sons and their clothes are given to my service.

²² “Then take the fat from the male sheep, the fat tail, and the fat that covers the inner organs. In addition, take the best part of the liver, both kidneys, and the fat around them, and the right thigh. (This is the male sheep to be used in appointing priests.)