Exodus 29:22-24

22“You shall also take the fat of the ram, the fat tail, the fat that covers the intestines, the lobe of the liver, the two kidneys with the fat that is on them, and the right thigh; (for it is a ram of ordination),

23and one loaf of bread and one cake of oiled bread and one wafer out of the basket of the unleavened bread that is before the Lord;

24and you shall put all these in the hands of Aaron and his sons, and wave them as a wave offering before the Lord.