仁王護國般若經疏 4.28

4.28

「住不可說」下，十釋法雲地。《地經》作大自在天王，王三千界；《瓔珞》作大淨居天王。大自在、大淨居、大淨天，皆同也。學行已滿名「理盡三昧」，唯有一行是如來行，所謂大般涅槃。菩薩亦得，名「同佛行處」。無明是三界之本，此惑已盡即三界原盡也。

From "Abiding in ineffable..." onward is the tenth [ground], explaining the ground of Dharma-clouds (dharmameghā-bhūmi). The *Daśabhūmika Sūtra* says one becomes the king of the Maheśvara heaven, king over three thousand realms; the *Yingluo jing* says one becomes the king of the Great Pure Abode. Maheśvara, Great Pure Abode, and Great Pure Heaven are all the same. The fulfillment of learning and practice is called the "samādhi of exhausting principle." There is only one practice that is the Tathāgata's practice, namely Mahāparinirvāṇa; the bodhisattva also attains it, which is called "sharing the sphere of the Buddha's practice." Ignorance is the root of the three realms; when this delusion is exhausted, the origin of the three realms is completely exhausted.