Leviticus 1:13, 17

The entrails, however, and the legs he shall wash with water. And 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 of a soothing aroma to the LORD.

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