Leviticus 1:9-11

9 He is to wash the entrails and lower parts of the legs with water, and the cohen is to cause all of it to go up in smoke on the altar as a burnt offering; it is an offering made by fire, a fragrant aroma for ADONAI.

10 “‘If his offering is from the flock, whether from the sheep or from the goats, for a burnt offering, he must offer a male without defect.

11 He is to slaughter it on the north side of the altar before ADONAI; and the sons of Aharon, the cohanim, are to splash its blood against all sides of the altar.