Yagnavalkya said: 'Let us hear what anybody may have told you.' Ganaka Vaideha replied: 'Barku Varshna told me that sight (kakshus) is Brahman.' Yagnavalkya said: 'As one who had (the benefit of a good) father, mother, and teacher might tell, so did Barku Varshna tell you that sight is Brahman; for what is the use of a person who cannot see? But did he tell you the body and the resting-place of that Brahman?' Ganaka Vaideha said: 'He did not tell me.' Yagnavalkya said: 'Your Majesty, this (Brahman) stands on one leg only.' Ganaka Vaideha said: 'Then tell me, Yagnavalkya.' Yagnavalkya said: 'The eye is its body, ether its place, and one should worship it as what is true.' Ganaka Vaideha said: 'What is the nature of that which is true?' Yagnavalkya replied: 'Your Majesty, sight itself (is that which is true); for if they say to a man who sees with his eye, "Didst thou see?" and he says, "I saw," then it is true. Sight, O King, is the Highest Brahman. Sight does not desert him who worships that (Brahman) with such knowledge, all creatures approach him, and having become a god, he goes to the gods.' Ganaka Vaideha said: 'I shall give you (for this) a thousand cows with a bull as big as an elephant.' Yagnavalkya said: 'My father was of opinion that one should not accept a reward without having fully instructed a pupil.'

In plain words: Janaka says a teacher told him sight is Brahman. Yagnavalkya says the eye is its body and space its home, and it should be honored as truth, because when someone says "I saw it," people believe it. He refuses payment until the teaching is complete.