Verse
अव्यक्ताद् व्यक्तयः सर्वाः प्रभवन्त्यहरागमे ।रात्र्यागमे प्रलीयन्ते तत्रैवाव्यक्तसंज्ञके ॥
At the coming of the Day all manifestations are born into being out of the unmanifest, at the coming of the Night all vanish or are dissolved into it.
Gītā 8·18