摩訶止觀 4.62

4.62

若欲懺悔二世重障，行四種三昧者，當識順流十心，明知過失；當運逆流十心，以為對治。此二十心通為諸懺之本。

If one wishes to repent of the heavy obstacles of both past and present lifetimes and practice the four kinds of samādhi, one must recognize the ten minds that flow with the stream, clearly knowing one's errors; and one must activate the ten minds that flow against the stream to serve as antidotes. These twenty minds are the universal basis of all repentances.