Bhagavad-gītā 8.19
BG 8.19
Open the full passageभूतग्रामः स एवायं भूत्वा भूत्वा प्रलीयते । रात्र्यागमेऽवशः पार्थ प्रभवत्यहरागमे ॥१९॥
Sanskrit
bhūta-grāmaḥ sa evāyaṁ bhūtvā bhūtvā pralīyate rātry-āgame 'vaśaḥ pārtha prabhavaty ahar-āgame
Translation
Again and again, when Brahmā's day arrives, all living entities come into being, and with the arrival of Brahmā's night they are helplessly annihilated.