So I have heard. At one time the Buddha was staying near Sāvatthī in Jeta’s Grove, Anāthapiṇḍika’s monastery. … “Mendicants, these four fuels maintain sentient beings that have been born and help those about to be born. What four? Edible food, whether solid or subtle; contact is the second, mental intention the third, and consciousness the fourth. These are the four fuels that maintain sentient beings that have been born and help those about to be born.