Exodus 29:22-24

22“Also you shall take the fat of the ram, the fat tail, the fat that covers the entrails, the fatty lobe attached to the liver, the two kidneys and the fat on them, the right thigh (for it is a ram of consecration),

23one loaf of bread, one cake made with oil, and one wafer from the basket of the unleavened bread that is before the Lord;

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