Vishnupurana 3.1.1

3.1.1

maitreya uvāca:
kathitā guruṇā samyag bhūsamudrādisaṃsthitiḥ
sūryādīnāṃ ca saṃsthānaṃ jyotiṣām api vistarāt //

MAITREYA.--The disposition of the earth and of the ocean, and the system of the sun and the planets, the creation of the gods and the rest, the origin of the Rishis, the generation of the four castes, the production of brute creatures, and the narratives of Dhruva and Prahláda, have been fully related by thee, my venerable preceptor. I am now desirous to hear from you the series of all the Manwantaras, as well as an account of those who preside over the respective periods, with Śakra, the king of the gods, at their head.