Mbh 3.133.1b

That tree is called full-grown which although slender and short, beareth fruits. But that which doth not bear fruits, is not considered as grown.’ The warder said, ‘Boys receive instruction from the old and they also in time grow old. Knowledge certainly is not attainable in a short time. “Wherefore then being a child, dost thou talk like an old man?’ Then Ashtavakra said, ‘One is not old because his head is gray. But the gods regard him as old who, although a child in years, is yet possessed of knowledge. The sages have not laid down that a man’s merit consists in years, or gray hair, or wealth, or friends. To us he is great who is versed in the Vedas. I have come here, O porter, desirous of seeing Vandin in the court. Go and inform king Janaka, who hath a garland of lotuses on his neck, that I am here. Thou shalt to-day see me enter into a dispute with the learned men, and defeat Vandin in a controversy. And when others have been silenced, the Brahmanas of matured learning and the king also with his principal priests, bear witness to the superior or the inferior quality of my attainments.’ The warder said, ‘How canst thou, who art but in thy tenth year, hope to enter into this sacrifice, into which learned and educated men only are admitted? I shall, however, try some means for thy admittance. Do thou also try thyself’. Ashtavakra then addressing the king said, ‘O king, O foremost of Janaka’s race, thou art the paramount sovereign and all power reposeth in thee. In times of old, king Yayati was the celebrator of sacrifices. And in the present age, thou it is that art performer thereof. We have heard that the learned Vandin, after defeating (in controversy) men expert in discussion, causeth them to be drowned by faithful servants employed by thee. Hearing this, I have come before these Brahmanas, to expound the doctrine of the unity of the Supreme Being. Where is now Vandin? Tell me so that I may approach him, and destroy him, even as the sun destroyeth the stars.