仁王護國般若波羅蜜多經疏 2.286

2.286

經：「若菩薩摩訶薩住不可說不可說佛剎，作第四禪大梵天王，為三界主，修不可說不可說法明門，得理盡三昧，同佛行處盡三界原，普利眾生如佛境界。」

The sūtra: "if a bodhisattva-mahāsattva abides in ineffable-ineffable buddha-kṣetras, becomes the Great Brahmā King of the fourth dhyāna, serves as the lord of the three realms, cultivates ineffable-ineffable gates of illumination into phenomena, attains the samādhi that exhausts principle, shares the scope of practice of the buddhas, exhausts the origin of the three realms, and universally benefits sentient beings like the state of a buddha—"