大乘起信論裂網疏 5.102

5.102

'Directly perceive the true nature of phenomena' means fundamental wisdom realizing the true. 'Clearly illumines defiled and pure distinctions' means subsequently attained wisdom illumining the conventional. Comprehending the conventional arises from realizing the true; hence it is spoken of as subsequently attained, just as when an eye has a cataract removed, it sees both emptiness and forms—it is not that there is a temporal sequence in the fruition. The rest can all be understood.