Leviticus 1:13

1:13 Then the one presenting the offering must wash the entrails and the legs in water, and the priest must present all of it and offer it up in smoke on the altar – it is a burnt offering, a gift of a soothing aroma to the Lord.

Leviticus 4:34

4:34 Then the priest must 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 he must pour out all the rest of its blood at the base of the altar.

Leviticus 5:1-2

Additional Sin Offering Regulations

5:1 “‘When a person sins in that he hears a public curse against one who fails to testify and he is a witness (he either saw or knew what had happened) and he does not make it known, then he will bear his punishment for iniquity. 5:2 Or when there is a person who touches anything ceremonially unclean, whether the carcass of an unclean wild animal, or the carcass of an unclean domesticated animal, or the carcass of an unclean creeping thing, even if he did not realize it, but he himself has become unclean and is guilty;