[75] Now at that time the Blessed One was seated in imperturbable concentration (āneñja-samādhi). Then it occurred to those bhikkhus: "In what dwelling (vihāra) is the Blessed One now dwelling?" Then it occurred to those bhikkhus: "The Blessed One is now dwelling in the imperturbable dwelling." And all of them sat down in imperturbable concentration.
Then, when the night was far advanced and the first watch had ended, the Venerable Ānanda rose from his seat, arranged his upper robe (uttarāsaṅga) over one shoulder, raised his joined palms in reverence toward the Blessed One, and said to the Blessed One: "Venerable sir, the night is far advanced; the first watch has ended; the visiting bhikkhus have been sitting for a long time. Venerable sir, may the Blessed One exchange friendly greetings with the visiting bhikkhus." When this was said, the Blessed One remained silent.
A second time, when the night was far advanced and the middle watch had ended, the Venerable Ānanda rose from his seat, arranged his upper robe over one shoulder, raised his joined palms in reverence toward the Blessed One, and said to the Blessed One: "Venerable sir, the night is far advanced; the middle watch has ended; the visiting bhikkhus have been sitting for a long time. Venerable sir, may the Blessed One exchange friendly greetings with the visiting bhikkhus." A second time the Blessed One remained silent.
A third time, when the night was far advanced and the last watch had ended, when dawn had broken and the night wore the face of gladness, the Venerable Ānanda rose from his seat, arranged his upper robe over one shoulder, raised his joined palms in reverence toward the Blessed One, and said to the Blessed One: "Venerable sir, the night is far advanced; the last watch has ended; dawn has broken; the night wears the face of gladness; the visiting bhikkhus have been sitting for a long time. Venerable sir, may the Blessed One exchange friendly greetings with the visiting bhikkhus."
Then the Blessed One, having emerged from that concentration, addressed the Venerable Ānanda: "If you had known, Ānanda, not even this much would have occurred to you to say. Ānanda, I and these five hundred bhikkhus have all been sitting in imperturbable concentration."
Then the Blessed One, understanding this meaning, at that time uttered this inspired utterance (udāna):
"He who has conquered the thorn of sensual pleasures,
and abuse, and violence, and bonds —
he stands like a mountain, imperturbable:
that bhikkhu does not tremble amid pleasure and pain (dukkha)."
The third [sutta].
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.