Bhagavad Gita 8.26
शुक्लकृष्णे गती ह्येते जगतः शाश्वते मते।
एकया यात्यनावृत्तिमन्ययाऽऽवर्तते पुनः।।8.26।।
Shuklakrishne gati hyete jagatah shashvate mate
Ekaya yatyanavrittimanyayavartate punah
Simple meaning, written by AIBright and dark, these two paths of the world are held to be eternal. By one a person goes and does not return, and by the other one comes back again.