Leviticus 1:13, 17

But he shall wash the entrails and legs with water. The priest shall offer all of it, and offer it up in smoke on the altar. It is a burnt offering, an offering by fire, a sweet and soothing aroma to the LORD.

Then he shall tear it open by its wings, but shall not sever it. And the priest shall offer it up in smoke on the altar, on the wood that is on the fire. It is a burnt offering, an offering by fire, a sweet and soothing aroma to the LORD.