In time his teacher came back, and said to him: `Upakosala.' He answered: `Sir.' The teacher said: `Friend, your face shines like that of one who knows Brahman. Who has taught you?' `Who should teach me, Sir?' he said. He denies, as it were. And he said (pointing) to the fires: `Are these fires other than fires?' The teacher said: `What, my friend, have these fires told you?'