坐禪三昧經 1.72

1.72

復次，入息念止中竟，次行痛念止；已得身念止，實今更得痛念止，實受喜。復次已知身實相，今欲知心心數法實相，是故受喜亦念息入出，受樂亦念息入出，是喜增長名為樂。復次，初心中生悅是名喜，後遍身喜是名樂。復次，初禪、二禪中樂痛名喜，三禪中樂痛名受樂。受諸心行，亦念息入出。諸心生滅法、心染法心不染法、心散法心攝法、心正法心邪法，如是等諸心相名為心行。心作喜時亦念息入出——先受喜自生，不故作念，心故作喜。

"Furthermore, having completed mindfulness of inhalation, one next practices mindfulness of feeling. Having attained mindfulness of the body in reality, one now further attains mindfulness of feeling in reality, experiencing joy. Furthermore, having known the true mark of the body, one now wishes to know the true mark of the mind and mental factors; therefore, experiencing joy, one is also mindful of the breath entering and exiting; experiencing pleasure, one is also mindful of the breath entering and exiting. This joy increasing is called pleasure. Furthermore, delight arising in the initial mind is called joy; joy pervading the body later on is called pleasure. Furthermore, the pleasant feeling in the first dhyāna and second dhyāna is called joy; the pleasant feeling in the third dhyāna is called experiencing pleasure. Experiencing the mental activities, one is also mindful of the breath entering and exiting. The dharmas of the arising and ceasing of various minds—stained mind and unstained mind, scattered mind and collected mind, correct mind and incorrect mind—such marks of mind are called mental activities. When the mind generates joy, one is also mindful of the breath entering and exiting: whereas previously experienced joy arose naturally without deliberate mindfulness, here the mind deliberately generates joy."