[868] "And what, bhikkhus, is the faculty of concentration (samādhindriya)? Here, bhikkhus, a noble disciple, having made relinquishment (vossagga) the object, gains concentration (samādhi), gains one-pointedness of mind (cittassa ekaggatā). Quite secluded from sensual pleasures, secluded from unwholesome states, he enters and dwells in the first jhāna, which is accompanied by thought and examination (vitakka-vicāra), with rapture and happiness born of seclusion. With the subsiding of thought and examination, he enters and dwells in the second jhāna, which has internal confidence and unification of mind (citta), is without thought, without examination, and has rapture and happiness born of concentration. With the fading away of rapture, he dwells equanimous and, mindful and clearly comprehending, he experiences happiness with the body; he enters and dwells in the third jhāna, of which the noble ones declare: 'He is equanimous, mindful, one who dwells happily.' With the abandoning of pleasure and the abandoning of pain, and with the previous passing away of joy and grief, he enters and dwells in the fourth jhāna, which is neither painful nor pleasant and includes purity of mindfulness due to equanimity. This, bhikkhus, is called the faculty of concentration."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.