Bhagavad Gita 8.19
The same multitude of beings, which have lived on earth so often, all are dissolved as the night of the universe approaches, to issue forth anew when morning breaks. Thus, it is ordained.
भूतग्रामः स एवायं भूत्वा भूत्वा प्रलीयते।
रात्र्यागमेऽवशः पार्थ प्रभवत्यहरागमे॥bhūtagrāmaḥ sa evāyaṃ bhūtvā bhūtvā pralīyate|
rātryāgame'vaśaḥ pārtha prabhavatyaharāgame||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).