Exodus 29:22-24

22Take the fat from the ram, the fat tail, the fat covering the entrails, the lobe of the liver, both kidneys with the fat on them, and the right thigh (since this is a ram for ordination), 23along with one loaf of bread, one cake of bread made with oil, and one wafer from the basket of unleavened bread that is before the LORD. 24Put all these in the hands of Aaron and his sons and wave them before the LORD as a wave offering.