Midrash su Numeri 15:13

2) "for Aaron and for his sons, holy of holies" — to permit the (remainders of the) meal-offerings of Israelite men. Now why should I (think to) exclude them (Israelite men, that I need a verse to include them)? It is written (Bamidbar 15:13): "All the native-born (men) shall do thus with these, to offer a fire-offering, a sweet savor to the L–rd." (Is the intent of the verse that) if he wishes to bring (libations [independent of the offering]) he may do so? Or (is its intent) that (the remainder of the) meal-offerings of (native-born) Israelite men be offered upon the fire (and not be eaten by the Cohanim, [the verse to be rendered: "All the native-born (men) shall do thus (as they do with the libation meal-offering) with these (gift meal-offerings), to offer (the remainder as) a fire-offering, etc."])? And how would I understand "And what is left from the meal-offering shall be for Aaron and for his sons"? As referring to (the meal-offerings) of proselytes, women, and bondsmen (and not to those of native-born Israelite men); it is, therefore, written: "for Aaron and for his sons, holy of holies" — to permit the (remainders of) meal-offerings of Israelite men (to be eaten by Cohanim).