In plain words
The disciple asks why the Veda, while declaring Knowledge alone to give supreme happiness, also prescribes caste duties, conduct and actions said to generate divine, animal, human and other births and their corresponding pleasures.
The disciple asks why the Veda, while declaring Knowledge alone to give supreme happiness, also prescribes caste duties, conduct and actions said to generate divine, animal, human and other births and their corresponding pleasures.