Midrasch zu Schemot 30:26

8) "and his full handfuls of incense of spices ground small": the taller (high-priest) relative to his size, and the shorter, relative to his (i.e., there is no absolute measure for the handful.) And this (an exact handful) was its size. "incense": to be (supplied) from communal funds. "spices": (all of the eleven) spices (enumerated in Shemoth, Ki Tissa) to be contained therein. "ground small": What is the intent of this? Is it not already written (Shemoth 30:26) "And you shall crush it fine? Why, then, "ground small"? That it be ground extra fine.