Leviticus 4:27-31

27‘If anyone of the common people sins unintentionally by doing any of the things the Lord has commanded not to be done, and becomes guilty,

28if his sin which he has committed is made known to him, then he shall bring a goat, a female without blemish as his offering for the sin which he has committed.

29He shall lay his hand on the head of the sin offering [transferring symbolically his guilt to the sacrifice], and kill it at the place of the burnt offering.

30The priest shall take some of its blood with his finger and put it on the horns of the altar of burnt offering and shall pour out all the rest of its blood at the base of the altar.

31Then he shall remove all its fat, just as the fat was removed from the sacrifice of peace offerings; and the priest shall offer it up in smoke on the altar as a sweet and soothing aroma to the Lord. In this way the priest shall make atonement for him, and he will be forgiven.