Sakkapañhasutta
Ekaṁ samayaṁ bhagavā rājagahe viharati gijjhakūṭe pabbate. Atha kho sakko devānamindo yena bhagavā tenupasaṅkami; upasaṅkamitvā bhagavantaṁ abhivādetvā ekamantaṁ aṭṭhāsi. Ekamantaṁ ṭhito kho sakko devānamindo bhagavantaṁ etadavoca: “ko nu kho, bhante, hetu, ko paccayo yena m’idhekacce sattā diṭṭheva dhamme no parinibbāyanti? Ko pana, bhante, hetu, ko paccayo yena m’idhekacce sattā diṭṭheva dhamme parinibbāyantī”ti?
The Question of Sakka
At one time the Buddha was staying near Rājagaha, on the Vulture’s Peak Mountain. And then Sakka, lord of gods, went up to the Buddha, bowed, stood to one side, and said to him: “What is the cause, sir, what is the reason why some sentient beings are not fully extinguished in this very life? What is the cause, what is the reason why some sentient beings are fully extinguished in this very life?”