金光明經文句記 2.52

2.52

初、示能淨諦觀。一心者，見思心也。觀此染心即是淨性，性非淺狹，極三諦源。全諦發觀即空假中，即空故不染於染，即假故不染於淨，即雙遮故不染二邊，即雙照故不染中道。三諦三觀秖一剎那，能所不殊、中邊俱淨。

First, demonstrating the contemplation of the truths that can purify. "One mind" is the mind of views and thoughts. Contemplating this stained mind as being itself the pure nature—this nature is neither shallow nor narrow, reaching the source of the three truths. Giving rise to contemplation entirely from the truth is precisely emptiness, provisionality, and the middle. Being identical to emptiness, it is unstained by stain; being identical to provisionality, it is unstained by purity; being identical to twofold occlusion, it is unstained by the two extremes; being identical to twofold illumination, it is unstained by the Middle Way. The three truths and threefold contemplation take place in just a single thought-moment; subject and object are not distinct, and the middle and extremes are both pure.