瑜伽師地論略纂 4.80

4.80

Concerning causes, regarding "or positing Īśvara, the primordial nature (prakṛti), the puruṣa, the intermediate, and so forth": Īśvara is the deity Maheśvara; the unmanifest nature (prakṛti); the puruṣa is the spiritual self; and King Brahmā resides in the intermediate dhyāna, hence called "intermediate"—these are coordinated and explained respectively.