Leviticus 1:13-15

13 But he shall wash the inwards and the legs with water: and the priest shall bring it all, and burn it on the altar: it is a burnt sacrifice, an offering made by fire, of a sweet smell to the LORD.

14 And if the burnt sacrifice for his offering to the LORD be of fowls, then he shall bring his offering of turtledoves, or of young pigeons.

15 And the priest shall bring it to the altar, and wring off his head, and burn it on the altar; and the blood thereof shall be wrung out at the side of the altar: