The Geography of the Puranas c13.s5.8

c13.s5.8

At the end of this day (of Brahmā) a dissolution of the universe occurs, when all the three worlds, earth and the regions of space, are consumed by fire... when the three worlds are but one mighty ocean¹⁴ Brahmā, who is one with Nārāyaṇa, satiate with the demolition of the universe; Sleeps... for a night of equal duration with his day; at the close of which he creates anew. Of such days and nights is a year of Brahmā composed; and a hundred such years constitute his whole life. One Parārddha, or half his existence, has expired, terminating with the Mahā-Kalpa called Padma. The Kalpa (or day of Brahmā) termed Varāha is the first of the second period of Brahmā's existence (Viṣṇu, P., III, Wilson's tr., p. 25).