Exodus 29:22-24

22“You are to take from the ram the fat, the fat tail, the fat that covers the entrails, the lobe of the liver, the two kidneys and the fat that is on them, and the right thigh – for it is the ram for consecration –

23and one round flat cake of bread, one perforated cake of oiled bread, and one wafer from the basket of bread made without yeast that is before the Lord.

24You are to put all these in Aaron’s hands and in his sons’ hands, and you are to wave them as a wave offering before the Lord.