Mahabharata 3.133.8

3.133.8

dvārapāla uvāca |
sarasvatīmīraya vedajuṣṭāmekākṣarāṃ bahurūpāṃ virājam |
aṅgātmānaṃ samavekṣasva bālaṃ kiṃ ślāghase durlabhā vādasiddhiḥ || 8 ||

It is said that even boys are not to be slighted,--for a fire, small though it be, burneth on being touched.' The warder replied, 'O young Brahmana, I consider you a boy, and therefore recite, if you know, the verse demonstrating the existence of the Supreme Being, and adored by the divine sages, and which, although composed of one letter, is yet multifarious. Make no vain boast. Learned men are really very rare.' Ashtavakra said, 'True growth cannot be inferred from the mere development of the body, as the growth of the knots of the Salmali tree cannot signify its age. 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.