Leviticus 4:25 (KJV)

Or if his sin, wherein he hath sinned, come to his knowledge; he shall bring his offering, a kid of the goats, a male without blemish:

And he shall lay his hand upon the head of the goat, and kill it in the place where they kill the burnt offering before the Lord: it is a sin offering.

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 shall pour out his blood at the bottom of the altar of burnt offering.

And he shall burn all his fat upon the altar, as the fat of the sacrifice of peace offerings: and the priest shall make an atonement for him as concerning his sin, and it shall be forgiven him.

And if any one of the common people sin through ignorance, while he doeth somewhat against any of the commandments of the Lord concerning things which ought not to be done, and be guilty;