Midrasch zu Wajikra 6:8

5. R. Eliezer says: I might think that he could present it (either) at the south of the horn or at the west. — This cannot be said! If there are two verses, one satisfying itself and satisfying the other, and one satisfying itself but nullifying the other, we choose the former and negate the latter. If you say "before the L–rd" at the west, you have nullified "in front of the altar" at the south; and if you say "in front of the altar" at the south, you have satisfied "before the L–rd" at the west. At which side, then, is it presented? At the south of the horn. (Vayikra 6:8) ("And he shall lift up from it with his fistful from the fine flour of the meal-offering and from its oil and all the frankincense that is on the meal-offering; and he shall cause it to smoke upon the altar, a sweet savor, a remembrance to the L–rd.") "And he shall lift up from it": from what is all joined together, that he not bring one issaron (a tenth of an ephah) in two vessels. "with his fistful": that he not make a vessel for the fistful. "from the fine flour of the meal-offering": and not from the fine flour of its neighbor, (i.e., he should not bring two meal-offerings in one vessel so that they become intermixed and the fistful is taken from both). "and from its oil": and not from the oil of its neighbor — that he not bring two meal-offerings in one vessel. "from the fine flour of the meal-offering and from its oil and all the frankincense": (Even though it is not taken with the fistful), frankincense must be in the vessel when it is taken. "and all the frankincense that is on the meal-offering and he shall cause it to smoke": He picks out the frankincense and brings it up on the fire.

6) "his full fistful": I might think it should be flowing over; it is, therefore, written (to negate this) (Vayikra 6:8): "in his fistful." If "in this fistful," I might think he can take the fistful with his fingertips (and that they need not reach his palm); it is, therefore, written: "his full fistful." How is this done? He bends three fingers over his palm (and bunches the flour in). And with a machvath or a marchesheth (baked meal-offerings, that do flow over [see Vayikra 2:5 and Vayikra 2:7]), he "erases" (the overflow) with his thumb from above and with his little finger from below.

8) In that case, should not the meal-offerings of Cohanim and the high-priest's meal-offering, which come by virtue of themselves, require "touching"? It is, therefore, written (to negate this): "and he shall touch it." Why do you see fit to include all of the meal-offerings and to exclude the meal-offerings of Cohanim and the high-priest's meal-offering? After Scripture includes, it excludes. Just as these are distinct in that part of them goes to the fire, that they come by virtue of themselves, and that part of them goes to the Cohanim (to be eaten) — (so, all meal-offerings like these require "touching"): to exclude the two loaves and the show bread, no part of which goes to the fire; to exclude the libation meal-offering, which does not come by virtue of itself, and to exclude the meal-offerings of Cohanim and the high-priest's meal-offering, no part of which goes to the Cohanim (but which is entirely consumed on the altar). (Ibid. 2:9): "And he shall lift (from the meal-offering its remembrance" [the fistful]): I might think (that he lifts it) in a vessel; it is, therefore, written elsewhere (Ibid. 6:8): "And he shall lift from it in his fist." Just as there, "in his fist," so, here.