Rashi on Leviticus 6:8/רש"י על ויקרא ו׳:ח׳

1והרים ממנו‎ AND HE SHALL TAKE UP FROM IT [IN HIS GRASP] — From it — from it as a united mass) — that there should be a full tenth part of an ephah at the same time in the vessel when he takes the fistful (Sifra, Tzav, Section 2 5; Menachot 24a).

2בקמצו WITH HIS GRASP — This implies that he shall not make a measure for the קומץ (he must not use a measure that holds as much as his fist and in that remove the flour) (Sifra, Tzav, Section 2 5; Yoma 47a).

3ומשמנה‎ מסלת המנחה‎ OF THE FLOUR OF THE MEAL OFFERING AND OF THE OIL THEREOF — From here we may derive that he takes the “fistful” (קומץ) from that spot where there is plenty of oil in it (Sotah 14b).

4המנחה THE MEAL-OFFERING — This implies that it shall not be mixed up with another meal-offering (Sifra, Tzav, Section 2 5).

5‎‏‎‎‏ הלבנה אשר על המנחה והקטיר‎ואת כל AND ALL THE FRANKINCENSE WHICH IS UPON THE MEAL OFFERING HE SHALL CAUSE TO ASCEND IN FUMES — This means that the picks the frankincense off the meal-offering after the fistful has been taken from the latter and burns it (cf. Rashi on Leviticus 2:1). And because Scripture has stated this specifically only in the case of one of the meal offerings mentioned in ויקרא (Leviticus 2:2; viz., in the case of מנחת סולת, and it might therefore be applied to that special case only), it was compelled to state this paragraph here in order to include in a general rule all kinds of meal offerings as to all the regulations applicable to them.