南宗頓教最上大乘摩訶般若波羅蜜經六祖惠能大師於韶州大梵寺施法壇經 1.28

1.28

「今既發四弘誓願訖，與善知識授無相懺悔，滅三世罪障。大師言：善知識！前念、後念及今念，念念不被愚迷染。從前惡行一時除，自性若除即是懺；前念後念及今念，念念不被愚痴染，除却從前矯誑心，永斷名為自性懺。前念、後念及今念，念念不被疽疾染，除却從前嫉妒心，自性若除即是懺（已上三唱）。善知識！何名懺悔？懺者終身不作，悔者知於前非。惡業恆不離心，諸佛前口說無益，我此法門中，永斷不作，名為懺悔。

"Now that the four vast vows have been made, I shall transmit the formless repentance to you kalyāṇamitras to extinguish the karmic hindrances of the three periods of time." The Master said: "Kalyāṇamitras! Past thoughts, future thoughts, and present thoughts—thought after thought not being defiled by foolish delusion. Removing all former evil actions at once: if eliminated from one's own-nature, that is repentance. Past thoughts, future thoughts, and present thoughts—thought after thought not being defiled by ignorance; eradicating past deceitful and arrogant minds, cutting them off forever is called the repentance of one's own-nature. Past thoughts, future thoughts, and present thoughts—thought after thought not being defiled by jealousy; eradicating past envious minds, if eliminated from one's own-nature, that is repentance." (Chanted three times above.) "Kalyāṇamitras! What is called repentance? Repentance means not committing [faults] for the rest of one's life; contrition means knowing past errors. If evil karma never leaves the mind, speaking with one's mouth before the Buddhas is of no benefit. In this Dharma door of mine, cutting off forever and not committing them again is called repentance."