Leviticus 1:13, 17

You are to wash the internal organs and the legs with water, and the priest is to bring all of them and burn them on the altar. It is a burnt offering, a food offering, an aroma pleasing to the LORD.

He shall tear it open by the wings, not dividing it completely, and then the priest shall burn it on the wood that is burning on the altar. It is a burnt offering, a food offering, an aroma pleasing to the LORD.