Sakalya said: `Which is thy deity in the zenith?' Yagnavalkya said: `Agni.' Sakalya said: `In what does that Agni abide.' Yagnavalkya said: `In speech.' Sakalya said: `And in what does speech abide?' Yagnavalkya said: `In the heart.' Sakalya said: `And in what does the heart abide?'