[56] Then a certain bhikkhu approached his own preceptor (upajjhāya); having approached, he said this to his own preceptor: "At present, venerable sir, my body has become as if drugged, the directions are not clear to me, the teachings do not become evident to me, dullness and drowsiness (thīna-middha) overwhelm my mind (citta) and remain, I live the holy life (brahmacariya) without delight, and I have doubt (vicikicchā) about the teachings."
Then that bhikkhu, taking that pupil (saddhivihārika) bhikkhu, approached the Blessed One; having approached and paid homage to the Blessed One, he sat down to one side. Seated to one side, that bhikkhu said this to the Blessed One: "Venerable sir, this bhikkhu says thus: 'At present, venerable sir, my body has become as if drugged, the directions are not clear to me, the teachings do not become evident to me, dullness and drowsiness overwhelm my mind and remain, I live the holy life without delight, and I have doubt about the teachings.'"
"So it is, bhikkhu: for one who dwells with the doors of the sense faculties (indriya) unguarded, knowing no moderation in eating, not devoted to wakefulness, lacking insight into wholesome states, not devoted to the practice of developing the states conducive to awakening (bodhipakkhiyā dhammā) in the earlier and later parts of the night — the body becomes as if drugged, the directions are not clear to him, the teachings do not become evident to him, dullness and drowsiness overwhelm his mind and remain, he lives the holy life without delight, and he has doubt about the teachings. Therefore, bhikkhu, you should train thus: 'I shall be guarded as to the doors of the sense faculties, moderate in eating, devoted to wakefulness, one possessed of insight into wholesome states; I shall dwell devoted to the practice of developing the states conducive to awakening in the earlier and later parts of the night.' Thus indeed, bhikkhu, should you train."
Then that bhikkhu, exhorted by the Blessed One with this exhortation, rose from his seat, paid homage to the Blessed One, circumambulated him keeping him on the right, and departed. Then that bhikkhu, dwelling alone, withdrawn, heedful, ardent, and resolute, before long realized for himself with direct knowledge, in this very life, that unsurpassed consummation of the holy life for the sake of which sons of good family rightly go forth from the home life into homelessness, and having entered upon it, he dwelt therein. He directly knew: "Birth is destroyed, the holy life has been lived, what was to be done has been done, there is no more of this state of being." And that bhikkhu became one of the arahants.
Then that bhikkhu, having attained arahantship, approached his own preceptor; having approached, he said this to his own preceptor: "At present, venerable sir, my body is not as if drugged, the directions are clear to me, the teachings become evident to me, dullness and drowsiness do not overwhelm my mind and remain, I live the holy life with delight, and I have no doubt about the teachings."
Then that bhikkhu, taking that pupil bhikkhu, approached the Blessed One; having approached and paid homage to the Blessed One, he sat down to one side. Seated to one side, that bhikkhu said this to the Blessed One: "Venerable sir, this bhikkhu says thus: 'At present, venerable sir, my body is not as if drugged, the directions are clear to me, the teachings become evident to me, dullness and drowsiness do not overwhelm my mind and remain, I live the holy life with delight, and I have no doubt about the teachings.'"
"So it is, bhikkhu: for one who dwells with the doors of the sense faculties guarded, moderate in eating, devoted to wakefulness, possessed of insight into wholesome states, devoted to the practice of developing the states conducive to awakening in the earlier and later parts of the night — the body does not become as if drugged, the directions are clear to him, the teachings become evident to him, dullness and drowsiness do not overwhelm his mind and remain, he lives the holy life with delight, and he has no doubt about the teachings. Therefore, bhikkhus, you should train thus: 'We shall be guarded as to the doors of the sense faculties, moderate in eating, devoted to wakefulness, possessed of insight into wholesome states; we shall dwell devoted to the practice of developing the states conducive to awakening in the earlier and later parts of the night.' Thus indeed, bhikkhus, should you train."
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.