Charles Ellicott Commentary Leviticus 8:17

"But the bullock, and its skin, and its flesh, and its dung, he burnt with fire without the camp; as Jehovah commanded Moses." — Leviticus 8:17 (ASV)

But the bullock ... he burnt ...— Though none of the blood of this sin offering was brought into the sanctuary, by which it became excluded from the rule laid down in Leviticus 6:30, the flesh was nevertheless not allowed to be eaten. Instead, like the sin offering of the high priest (Leviticus 4:3–12) and that for the whole congregation (Leviticus 4:13–21), it had to be burnt without the camp. This was because Moses could not eat it, as he was not a legally consecrated priest , and the priest also could not eat it, because it was against the law for the sinner to partake of the sin offering which he himself brought .