Vishnupurana 4.2.p10

4.2.p10

Accordingly a child was conceived in the belly of Yuvanāswa; it grew and in proper time it ripped open the right side of the king and was born. But the king did not die. The son being born the Rishis said—"Who will be its nurse". There appeared the king of the celestials and said "He shall have me for his nurse (mamayan dhāsyati)". He was thence called Māndhāta. Indra put his fore-finger into the mouth of the infant, who sucked it and drew it from heavenly nectar. And he grew up and became a powerful king and brought the seven continents into his subjection. It is said of him "From the rising of the setting sun all that is lighted by his rays is the land of Māndhāta the son of Yuvanāswa".