起信論註 1.11

1.11

論此義云何以是二門不相離故　述曰。此釋成也。此云何者二門。若別不可相從。如本一心未容皆攝。如何二門各總攝耶。故次答云。以是二門不相離故。以真如門是心理體。生滅門者是心事相。以彼理事不相離故。舉理攝事舉事攝理。故說二門皆各總攝（答。舉水則是波故波則是水。是故二門皆各總攝）。

[Treatise:] What does this mean? Because these two aspects are not separate from each other. [Commentary:] This explains and establishes it. "What does this mean?": If the two aspects were separate, they could not follow each other; as with the original one mind, it could not yet be that both subsume. How could the two aspects each completely subsume? Therefore, the reply follows: "Because these two aspects are not separate from each other." Because the aspect of tathatā is the principle-essence of the mind, and the aspect of arising and ceasing is the phenomena-marks of the mind. Because principle and phenomena are not separate from each other, raising principle subsumes phenomena, and raising phenomena subsumes principle. Therefore, it is said that the two aspects each completely subsume. (Answer: Raising water is waves; hence waves are water; therefore, the two aspects each completely subsume.)