Exodus 29:22-24

22“Take the fat from the ram, the fat tail, the fat covering the entrails, the fatty lobe of the liver, the two kidneys and the fat on them, and the right thigh (since this is a ram for ordination);

23take 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;

24and put all of them in the hands of Aaron and his sons and present them as a presentation offering before the Lord.