首楞嚴義疏注經 10.172

10.172

既知識是生類元由，故十方界依之與正皆識所變，同一識體，斯則三界唯心，萬法唯識。先雖信教，今觀中明見也。精色不沈，所觀境現也，由觀力故境界明白，故云不沈。發現幽祕者，似通發也。未至此位，諸根暗昧，不能遠觀，故云幽祕。今由觀力六根清淨，不由天眼徹見諸界等，故云發現。

Since he knows that consciousness is the primary source of the classes of living beings, in the realms of the ten directions, both dependent [environments] and primary [beings] are all transformed by consciousness, sharing the same substance of consciousness; this is precisely "the three realms are mind-only, all dharmas are consciousness-only". Although he previously had faith in the teaching, now in contemplation he clearly sees it. "The refined light does not sink": the contemplated realm appears; due to the power of contemplation the realm is clear, hence it is said "does not sink". "Revealing the subtle and secret": the resemblance penetrations manifest. Prior to reaching this stage, the faculties were dim and obscure and could not see far; hence it is called "subtle and secret". Now, through the power of contemplation, the six sense faculties are purified, and without relying on the divine eye he sees thoroughly into the worlds, etc.; hence it is said "revealing".