起信論疏筆削記 17.25

17.25

First, "General":
Regarding the Commentary's "Understanding": understanding penetrates tathatā, hence it is called "deep understanding." Distinct and clear, without any darkness or obscuration, hence it is called "present before [one]." Furthermore, because it surpasses what precedes, it is called "deep"; because it differs from what follows, it is called "understanding."
"Practice": tathatā is markless; because one conforms with tathatā, each and every practice cultivated is markless, just as the *Diamond Sūtra* speaks of giving without abiding in forms, and giving without abiding in sounds, fragrances, and so forth. All practices are like this; hence it is called "free from marks."