Leviticus 1:13, 17

but he shall wash the entrails and the legs with water. Then the priest shall bring it all and burn it on the altar; it is a burnt sacrifice, an offering made by fire, a sweet aroma to the LORD.

Then he shall split it at its wings, but shall not divide it completely; and the priest shall burn it on the altar, on the wood that is on the fire. It is a burnt sacrifice, an offering made by fire, a sweet aroma to the LORD.