John Gill Commentary Leviticus 4:34

"And the priest shall take of the blood of the sin-offering with his finger, and put it upon the horns of the altar of burnt-offering; and all the blood thereof shall he pour out at the base of the altar:" — Leviticus 4:34 (ASV)

Ver. 34-35. And the priest shall take of the blood (See Gill on Leviticus 4:25) (See Gill on Leviticus 4:26).