Leviticus 5:8-9

NHEB(i) 8 He shall bring them to the priest, who shall first offer the one which is for the sin offering, and wring off its head from its neck, but shall not sever it completely. 9 He shall sprinkle some of the blood of the sin offering on the side of the altar; and the rest of the blood shall be drained out at the base of the altar. It is a sin offering.