Then Sauryâyanin Gârgya asked: "Sir, What are they that sleep in this man, and what are they that are awake in him? What power (deva) is it that sees dreams? Whose is the happiness? On what do all these depend?"

In plain words: Another student, Sauryayanin Gargya, asks the teacher about sleep and dreams. What in a person sleeps, and what stays awake? What power sees dreams? Who feels the happiness of deep sleep, and what does it all rest on?