Leviticus 16:25

And the fat of the sin offering shall he burn upon the altar. The brazen altar of burnt offering, and so says Jarchi, on the outward altar; for of the inward (i.e. the altar of incense) it is written, ye shall not offer upon it strange incense, nor a burnt offering, nor a meat offering; and this fat he explains to be what was on the inwards of both the bullock and the goat; and so says Aben Ezra, the fat of the bullock for the sin offering, and the fat of the goat for a sin offering, and also the fat of the kid of the goat, which, was a sin offering for the priest, Numbers 29:11; this fat was burnt at the same time the burnt offerings were offered in Leviticus 16:24.