Leviticus 6:25

25Speak to Aaron and his sons, saying, aThis is the law of the sin offering. bIn the place where the burnt offering is killed shall the sin offering be killed before the Lord; cit is most holy.

Leviticus 7:2

2 dIn the place where they kill the burnt offering they shall kill the guilt offering, and its blood shall be thrown against the sides of the altar.
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