宗鏡錄 95.11

95.11

善夜經云。佛言。過去之法。不應追念。未來之法。不應希求。現至之法。不應住著。若能如是。當處解脫。釋曰。此緣三世之境。是相續識。若初心人。未得一念不生。或前念忽起。但後念莫續。亦漸相應。若欲頓消。直觀一念。生時。不得起處。自然前後際斷。當處虛寂。如金剛般若經云。過去心不可得。未來心不可得。現在心不可得。以無得故。自不相續。

The Bhaddekarattasūtra says: 'The Buddha said: "Past dharmas should not be pursued in thought; future dharmas should not be sought with longing; present dharmas that have arrived should not be abided in or clung to. If one can be like this, one is liberated on the spot."
Explanation: This conditioning of the objects of the three periods of time is the continuing consciousness. For a beginner who has not yet attained the state where not a single thought arises, if a prior thought suddenly arises, so long as the subsequent thought does not continue it, he will gradually accord [with truth]. If one wishes to eliminate them suddenly, directly contemplate a single thought: when it arises, its point of arising cannot be found; naturally the frontiers before and behind are severed, and it is empty and quiescent on the spot. As the Vajracchedikā-prajñāpāramitāsūtra says: 'Past citta cannot be found; future citta cannot be found; present citta cannot be found.' Because they cannot be found, they naturally do not continue.