Leviticus 1:15

‘He shall also sprinkle some of the blood of the sin offering on the side of the altar, while the rest of the blood shall be drained out at the base of the altar: it is a sin offering.

‘The second he shall then prepare as a burnt offering according to the legal judgment. So the priest shall make atonement on his behalf for his sin which he has committed, and it will be forgiven him.

In the porch of the gate were two tables on each side, on which to slaughter the burnt offering, the sin offering and the guilt offering.