Devibhagavatapurana 4.2.43

4.2.43

devakī rohiṇī cobhe bhaginyau bharatarṣabha |
varuṇena mahāñchāpo dattaḥ kopāditi śrutam ||

What fault was committed by Kas'yapa that he had to take his birth along with his wife as cowherds. And why was it that the Everlasting uninterrupted Atman Visnu Nârâyana had to take his birth in Gokula. He whose abode is Vaikuntha, who is the Lord of Rama! who is Bhagavân and the Supreme amongst the gods, who is the upholder of the universe and the yugas! Under Whose order can such a being abandon his abode and take his birth in the world like an ordinary mortal? There is this grave doubt, then, of mine on this point.