Then when one hundred years had passed away, a son shining as the sun pierced the left side of the king endowed with a mighty soul, and came forth. And the son was possessed of mighty strength. Nor did Yuvanaswa die—which itself was strange. Then Indra of mighty strength came to pay him a visit. And the deities enquired of the great Indra, ‘What is to be sucked by this boy?’ Then Indra introduced his own forefinger into his mouth. And when the wielder of the thunderbolt said, ‘He will suck me,’ the dwellers of heaven together with Indra christened the boy Mandhata, (literally, Me he shall suck). Then the boy having tasted the forefinger extended by Indra, became possessed of mighty strength, and he grew thirteen cubits, O king. And O great king! the whole of sacred learning together with the holy science of arms, was acquired by that masterful boy, who gained all that knowledge by the simple and unassisted power of his thought.

— Mahabharata