Rashi on Leviticus 6:15/רש"י על ויקרא ו׳:ט״ו

1המשיח תחתיו מבניו is the same as המשיח מבניו תחתיו THE PRIEST THAT IS ANOINTED FROM AMONGST HIS SONS IN HIS STEAD.

2כליל תקטר IT SHALL WHOLLY ASCEND IN FUMES — The קמץ (the altar's share) is not taken off from it so that there can be any remaining of it to be eaten by the priests, but the whole of it is burnt entire. Similarly the next verse points out that every free-will meal-offering of a priest (i. e. such offering in general) shall be wholly burnt (cf. Sifra, Tzav, Chapter 5 3).