פירוש על במדבר 18:9

מן האש FROM THE FIRE — i.e., after the burning of the portions given over the fire. (The words are taken to mean: from the time when the fire has operated).

מן האש, for all of it was meant for burning on the altar, the priests having no share in it until after the parts which have to be burned up have been burned up. The reason is that the priests’ share is not really theirs, i.e. the sacrificial animal or parts of it does not belong to them, but it belongs to G’d and whatever they may eat, they eat as “guests at G’d’s table,” not in their own right, in Talmudic parlance משלחן גבוה הם אוכלים.

מן האש, after the fat parts of the offerings had been burned up, that which the fire had left over.