Leviticus 4:27-31

“Now if any of the common people sins unintentionally by violating one of the LORD’s commands, does what is prohibited, and incurs guilt, or if someone informs him about the sin he has committed, then he is to bring an unblemished female goat as his offering for the sin that he has committed. He is to lay his hand on the head of the sin offering and slaughter it at the place of the burnt offering. Then the priest is to take some of its blood with his finger and apply it to the horns of the altar of burnt offering. He is to pour out the rest of its blood at the base of the altar. He is to remove all its fat just as the fat is removed from the fellowship sacrifice. The priest is to burn it on the altar as a pleasing aroma to the LORD. In this way the priest will make atonement on his behalf, and he will be forgiven.