Leviticus 4:28-30

28if his sin, which he hath sinned, come to his knowledge, then he shall bring his offering, a goat, a female without blemish, for his sin which he hath sinned.

29And he shall lay his hand on the head of the sin-offering, and slaughter the sin-offering at the place of the burnt-offering.

30And the priest shall take of the blood thereof with his finger, and put [it] on the horns of the altar of burnt-offering, and shall pour out all the blood thereof at the bottom of the altar.