UtshovBhagavad Gita 8.18
अव्यक्ताद्व्यक्तयः सर्वाः प्रभवन्त्यहरागमे।
रात्र्यागमे प्रलीयन्ते तत्रैवाव्यक्तसंज्ञके।।8.18।।
Avyaktadvyaktayah sarvah prabhavantyaharagame
Ratryagame praliyante tatraivavyaktasangyake
Simple meaning, written by AIAll manifested beings arise from the unmanifest at the beginning of Brahma’s day, and at the onset of his night they merge back into the unmanifest.