Êxodo 29:22

22 "Take from this ram the fat, the fat tail, the fat on the internal organs, the long lobe of the liver, both kidneys with the fat on them, and the right thigh. (This is the ram for the ordination.)

22 Then take the fat of the sheep, the fat tail, the fat covering the insides, and the fat joining the liver and the two kidneys with the fat round them, and the right leg; for by the offering of this sheep they are to be marked out as priests: