Mahabharata 3.126.26

3.126.26

niścakrāma mahātejā na ca taṃ mṛtyurāviśat |
yuvanāśvaṃ narapatiṃ tadadbhutamivābhavat || 26 ||

a son would have been born to thee of exceeding strength and valour, and strengthened by austerities, and who would have sent by his bravery even Indra to the abode of the god of death. It was in this manner, O king! that this water had been prepared by me. By drinking this water, O king, thou hast done what was not at all right. But it is impossible now for us to turn back the accident which hath happened. Surely what thou hast done must have been the fiat of Fate. Since thou, O great king, being a thirst hast drunk water prepared with sacred hymns, and filled with the virtue of my religious labours, thou must bring forth out of thy own body a son of the character described above. To that end we shall perform a sacrifice for thee, of wonderful effect so that, valorous as thou art, thou wilt bring forth a son equal to Indra. Nor with thou experience any trouble on account of the labour pains.' 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.