起信論註 1.43

1.43

論五者能心不相應染依心自在地能離故　述曰。此五意中第二轉識。依於動心成能見。污淨心故名能見染。至第九地得無礙智。善知眾生心行稠林。自他無礙名心自在。無明礙心永不現行故能離也。

[Treatise:] Fifth is defilement unassociated with the [perceiving] mind, which can be abandoned relying on the stage of mastery over mind. [Commentary:] This is the second, the evolving consciousness, among the five minds. Relying on the mind's activation, it becomes the perceiver. Polluting the pure mind, it is called the defilement of perceiving. Reaching the ninth stage, one attains unimpeded wisdom, knowing well the dense forest of mental activities of sentient beings. Being unimpeded between self and others is called mastery over mind. Because the mind obstructed by avidyā never becomes manifest again, one is able to abandon it.