Exodus 29:14; Exodus 29:18; Exodus 29:28

14 But burn the bull’s flesh and its hide and its intestines outside the camp. It is a sin offering.
18 Then burn the entire ram on the altar. It is a burnt offering to the LORD, a pleasing aroma, a food offering presented to the LORD.
28 This is always to be the perpetual share from the Israelites for Aaron and his sons. It is the contribution the Israelites are to make to the LORD from their fellowship offerings.