Leviticus 8:26-27

²⁶And out of the basket of unleavened bread, that was before the LORD, he took one unleavened cake, and a cake of oiled bread, and one wafer, and put them on the fat, and upon the right shoulder:

²⁷And he put all upon Aaron’s hands, and upon his sons’ hands, and waved them for a wave offering before the LORD.