俱舍論頌疏論本 8.6

8.6

"Hell beings, animals, ghosts,
humans, and the six heavens of desire
are named the twenty of the desire realm,
due to distinctions among hells and continents.
Above this are seventeen places
named the subtle-form realm, wherein
the [first] three dhyānas have three each,
and the fourth dhyāna has eight.
The formless realm has no location;
according to rebirth, there are four kinds;
relying on generic similarity and life-force,
they maintain the continuity of mind and the rest."