維摩經玄疏 2.42

2.42

第一、明別相三觀者，觀因緣所生三諦之理，相別不同，取相、恒沙、無明三種惑障麁細，階級有異；觀理破惑，用智不同，故名別相三觀也。即是《大品經．三慧品》所明三智相也。今釋此別相三觀，即為三別：一，從假入空觀；二，從空入假觀；三，明中道第一義諦觀也。

First, in explaining the three contemplations of distinctive characteristics: Contemplating the principle of the three truths produced from causes and conditions has distinct and different characteristics. The coarseness and subtlety of the three kinds of delusive hindrances—grasping at characteristics, [delusions as numerous as] the Ganges sands, and fundamental ignorance—have different stages. In contemplating the principle and refuting delusion, the application of wisdom differs; hence they are called the three contemplations of distinctive characteristics. These are precisely the characteristics of the three wisdoms explained in the 'Chapter on the Threefold Prajñā' of the Pañcaviṃśatisāhasrikā Prajñāpāramitā Sūtra. Now, in explaining these three contemplations of distinctive characteristics, there are three distinct parts: first, the contemplation of entering emptiness from the provisional; second, the contemplation of entering the provisional from emptiness; third, the contemplation of the middle way as paramārtha-satya.