Leviticus 9:12

(12) And he slew the burnt offering.—As was the order of the sacrifices which Moses brought (see Leviticus 8:18-21), so here the sin offering is followed by the burnt offering. The ram (see Leviticus 9:2) which constituted this sacrifice Aaron slew at the north side of the altar (see Leviticus 1:11), and after the blood had been received into the bowl by his sons who assisted him, and had been handed to him, Aaron sprinkled it around the altar in the same manner as Moses had done before. (See Leviticus 8:19.)