Vishnupurana 3.2.p13

3.2.p13

And the glorious Jannardana, wearing form of Brahmā, the essence of all things, the lord of all, the creator of all, involved in his own illusions and having swallowed up three spheres, sleeps upon the serpent Sesha in the midst of the ocean. And awaking after sleep the undecaying Hari, resorting to the quality of foulness, creates all things as they were before. And by virtue of a part of his essence which is identical with the quality of goodness he, as the Manus, the celestials, their chiefs, kings, as well as the seven Rishis, preserves the universe. I will now explain to you, O Maitreya, how Vishnu, who is regarded as Providence all through the four ages, preserved (the universe).