Leviticus 8:25-28

25He took the fat, the fat tail, and all the fat that was on the innards, as well as the cover of the liver, the two kidneys with their fat and the right thigh.

26Then out of the basket of matzah that was before Adonai, he took one matzah cake, one cake of oiled bread and one wafer, and placed them on the fat and on the right thigh.

27He put all these in Aaron’s hands and in the hands of his sons, and waved them for a wave offering before Adonai.

28Then Moses took them from their hands and burned them up in smoke on the altar with the burnt offering. They were a consecration for a soothing aroma. It was an offering by fire to Adonai.