“Say to the Israelites: ‘Anyone who brings a fellowship offering to the LORD is to bring part of it as their sacrifice to the LORD.
With their own hands they are to present the food offering to the LORD; they are to bring the fat, together with the breast, and wave the breast before the LORD as a wave offering.
References for Leviticus 7:30
The priest shall burn the fat on the altar, but the breast belongs to Aaron and his sons.
References for Leviticus 7:31