首楞嚴義疏注經 9.80

9.80

"Ānanda, regarding these Non-Returning Heavens, the heavenly kings of those four stages of the fourth dhyāna only hear of them with veneration, but cannot know or see them, just as nowadays in the mundane realm, in the wilderness, deep mountains, and places of holy bodhimaṇḍas, because they are maintained by arhats, crude people of the mundane realm cannot see them."