The Burnt offering: Required to Be: Entirely Burned

Then Aaron’s sons the priests are to arrange the pieces, including the head and the fat, atop the burning wood on the altar.

The 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.

He is to cut the animal into pieces, and the priest shall arrange them, including the head and fat, atop the burning wood that is on the altar.

The entrails and legs must be washed with water, and the priest shall present all of it and burn it on the altar; it is a burnt offering, a food offering, a pleasing aroma to the LORD.

“Command Aaron and his sons that this is the law of the burnt offering: The burnt offering is to remain on the hearth of the altar all night, until morning, and the fire must be kept burning on the altar.