Thanks @soulsings for pointing me in the right direction; since I was looking for the Pali reference, here's the passage from the Ghatikara Sutta (MN 81):
“Then he said: ‘Venerable sir, have you a better supporter than I am?’—‘I have, great king. There is a market town called Vebhalinga where a potter named Ghaṭīkāra lives. He is my supporter, my chief supporter. Now you, great king, thought: “The Blessed One Kassapa, accomplished and fully enlightened, does not accept from me a residence for the Rains in Benares,” and you were very disappointed and sad; but the potter Ghaṭīkāra is not and will not be so. The potter Ghaṭīkāra has gone for refuge to the Buddha, the Dhamma, and the Sangha. He abstains from killing living beings, from taking what is not given, from misconduct in sensual pleasures, from false speech, and from wine, liquor, and intoxicants, which are the basis of negligence. He has unwavering confidence in the Buddha, the Dhamma, and the Sangha, and he possesses the virtues loved by noble ones. He is free from doubt about suffering, about the origin of suffering, about the cessation of suffering, and about the way leading to the cessation of suffering. He eats only one meal a day, he observes celibacy, he is virtuous, of good character. He has laid aside gems and gold, he has given up gold and silver. He does not dig the ground for clay with a pick or with his own hands; what has broken off riverbanks or is thrown up by rats, he brings home in a carrier; when he has made a pot he says: “Let anyone who likes set down some selected rice or selected beans or selected lentils, and let him take away whatever he likes. He supports his blind and aged parents. Having destroyed the five lower fetters, he is one who will reappear spontaneously [in the Pure Abodes] and there attain final Nibbāna without ever returning from that world.
-- MN 81 (Bodhi, trans)