Leviticus 1:6-9

6Next, he is to skin the burnt offering and cut it into pieces.

7The sons of Aaron the priest shall put a fire on the altar and arrange wood on the fire. 8Then Aaron’s sons the priests are to arrange the pieces, including the head and the fat, atop the burning wood on the altar. 9The entrails and legs must be washed with water, and the priest shall burn all of it on the altar as a burnt offering, a food offering, a pleasing aroma to the LORD.