Leviticus 1:16-18

16 Then shall he take away its crop with its plumage, and cast it beside the altar, eastward, into the place of fat ashes;

17 and he shall cleave it in its wings he shall not divide it asunder, so shall the priest make a perfume therewith, at the altar, upon the wood that is on the fire, an ascending-sacrifice, it is, an altar-flame of a satisfying odour, unto Yahweh.