Bhagavata Purana
A tale from the Bhagavata Purana states that when the earth was about to be engulfed by water, Markandeya prayed to Vishnu to rescue him. Vishnu appeared in the form of a child floating on a leaf, and declared to the sage that he was Time and Death. He requested the sage to enter into his mouth and save himself from the surging water. Inside the boy's stomach Markandeya discovered all the worlds, the seven regions and the seven oceans. The mountains and the kingdoms were all there. So were all living beings. Markandeya did not know what to make of all this. He started to pray to Vishnu. No sooner had he started, than he came out of the boy's mouth. Vishnu now appeared before him and blessed him. The sage spent a thousand years with Vishnu. He composed the Bala mukundashtakam at this moment.
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