Sakkasutta
Ekaṁ samayaṁ bhagavā sakkesu viharati kapilavatthusmiṁ nigrodhārāme. Atha kho sambahulā sakkā upāsakā tadahuposathe yena bhagavā tenupasaṅkamiṁsu; upasaṅkamitvā bhagavantaṁ abhivādetvā ekamantaṁ nisīdiṁsu. Ekamantaṁ nisinne kho sakke upāsake bhagavā etadavoca: “api nu tumhe, sakkā, aṭṭhaṅgasamannāgataṁ uposathaṁ upavasathā”ti? “Appekadā mayaṁ, bhante, aṭṭhaṅgasamannāgataṁ uposathaṁ upavasāma, appekadā na upavasāmā”ti. “Tesaṁ vo, sakkā, alābhā tesaṁ dulladdhaṁ, ye tumhe evaṁ sokasabhaye jīvite maraṇasabhaye jīvite appekadā aṭṭhaṅgasamannāgataṁ uposathaṁ upavasatha, appekadā na upavasatha.
With the Sakyans
At one time the Buddha was staying in the land of the Sakyans, near Kapilavatthu in the Banyan Tree Monastery. Then on the sabbath several Sakyan lay followers went up to the Buddha, bowed, and sat down to one side. The Buddha said to them: “Sakyans, do you observe the sabbath with its eight factors?” “Sir, sometimes we do, sometimes we don’t.” “That’s your loss, Sakyans, it’s your misfortune. In this life with its fear of sorrow and death, you sometimes keep the sabbath and you sometimes don’t.