Manusmriti
मन्वन्तराण्यसङ्ख्यानि सर्गः संहार एव च । क्रीडन्निवैतत् कुरुते परमेष्ठी पुनः पुनः ॥ ८० ॥
The Manvantaras, the creations and destructions (of the world, are) numberless; sporting, as it were, Brahman repeats this again and again.
english translation
manvantarANyasaGkhyAni sargaH saMhAra eva ca । krIDannivaitat kurute parameSThI punaH punaH ॥ 80 ॥
hk transliteration by Sanscript