Bhagavad-gītā 8.18
BG 8.18
Open the full passageअव्यक्ताद् व्यक्तयः सर्वाः प्रभवन्त्यहरागमे । रात्र्यागमे प्रलीयन्ते तत्रैवाव्यक्तसंज्ञके ॥१८॥
Sanskrit
avyaktād vyaktayaḥ sarvāḥ prabhavanty ahar-āgame rātry-āgame pralīyante tatraivāvyakta-saṁjñake
Translation
At the beginning of Brahmā's day, all living entities become manifest from the unmanifest state, and thereafter, when the night falls, they are merged into the unmanifest again.