Bhagavad Gita Chapter 8.19
bhūta-grāmaḥ sa evāyaḿ
bhūtvā bhūtvā pralīyate
rātry-āgame ’vaśaḥ pārtha
prabhavaty ahar-āgame
Translation
Again and again, when Brahma’s day arrives, all living entities come into being, and with the arrival of Brahma’s night they are helplessly annihilated.