Rashi on Leviticus 16:25/רש"י על ויקרא ט״ז:כ״ה

1ואת חלב החטאת AND THE FAT OF THE SIN OFFERING [SHALL HE CAUSE TO ASCEND IN FUMES] — i. e. the fat parts of both the bullock and the goat.

2יקטיר המזבחה SHALL HE CAUSE TO ASCEND IN FUMES ON THE ALTAR — i. e. on the outer altar, for if you say that it was burnt on the inner altar you are wrong, for it is written (Exodus 30:9) "Ye shall not bring up strange incense thereon, (i. e. on the inner altar) nor burnt offering, nor oblation".