俱舍論頌疏論本 10.44

10.44

Regarding "twelve [cognizing] the form [realm], and three [cognizing] the higher [realm]": this explains the number of objects of the higher realms cognized by the explorations of the desire realm. The desire realm cognizing the form realm has only twelve: namely, joy, grief, and equanimity each cognizing four [objects] of the form realm, three times four being twelve. That realm lacks smell and taste, excluding the six of smell and taste. "Three [cognizing] the higher": "higher" means the formless realm; the desire realm cognizing the formless realm can only have three, namely joy, grief, and equanimity each cognizing its dharmas. That realm lacks the five objects such as form, hence there are three [explorations of] dharmas.