Leviticus 4:30-34

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

Then 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 soothing aroma to the Lord. So the priest shall make atonement for him, and he will be forgiven.

‘But if he brings a lamb as his offering for a sin offering, he shall bring a female without defect.

And he shall lay his hand on the head of the sin offering and slaughter it as a sin offering in the place where they slaughter the burnt offering.

And the priest is to take some of the blood of the sin offering with his finger and put it on the horns of the altar of burnt offering, and all the rest of its blood he shall pour out at the base of the altar.