[451] And how does a bhikkhu dwell contemplating dhammas in dhammas both internally and externally?
Here a bhikkhu, when sensual desire (kāmacchanda) is present, understands: "There is sensual desire"; or when sensual desire is absent, he understands: "There is no sensual desire." He also understands how there comes to be the arising of unarisen sensual desire; he also understands how there comes to be the abandoning of arisen sensual desire; and he also understands how there comes to be the future non-arising of abandoned sensual desire. When ill will (byāpāda) is present … when dullness and drowsiness (thīnamiddha) are present … when restlessness and remorse (uddhaccakukkucca) are present … when doubt (vicikicchā) is present, he understands: "There is doubt"; or when doubt is absent, he understands: "There is no doubt." He also understands how there comes to be the arising of unarisen doubt; he also understands how there comes to be the abandoning of arisen doubt; and he also understands how there comes to be the future non-arising of abandoned doubt.
When the awakening factor of mindfulness (satisambojjhaṅga) is present, he understands: "There is the awakening factor of mindfulness"; or when the awakening factor of mindfulness is absent, he understands: "There is no awakening factor of mindfulness." He also understands how there comes to be the arising of the unarisen awakening factor of mindfulness; and he also understands how there comes to be the fulfillment by development of the arisen awakening factor of mindfulness. When the awakening factor of investigation of dhammas (dhammavicayasambojjhaṅga) is present … when the awakening factor of energy (viriyasambojjhaṅga) is present … when the awakening factor of rapture (pītisambojjhaṅga) is present … when the awakening factor of tranquility (passaddhisambojjhaṅga) is present … when the awakening factor of concentration (samādhisambojjhaṅga) is present … when the awakening factor of equanimity (upekkhāsambojjhaṅga) is present, he understands: "There is the awakening factor of equanimity"; or when the awakening factor of equanimity is absent, he understands: "There is no awakening factor of equanimity." He also understands how there comes to be the arising of the unarisen awakening factor of equanimity; and he also understands how there comes to be the fulfillment by development of the arisen awakening factor of equanimity.
Thus a bhikkhu dwells contemplating dhammas in dhammas both internally and externally, ardent (ātāpī), clearly comprehending (sampajāno), mindful (satimā), having removed covetousness and grief regarding the world (abhijjhādomanassa).
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.