ŚVETĀŚVATARA UPANISHAD · 1.9

ज्ञाज्ञौ द्वाव् अजाव् ईशनीशाव् अजा ह्य् एका भोक्तृभोगार्थयुक्ता ।
अनन्तश् चात्मा विश्वरूपो ह्य् अकर्ता त्रयं यदा विन्दते ब्रह्मम् एतत् ॥

jñājñau dvāv ajāv īśanīśāv ajā hy ekā bhoktṛbhogārthayuktā ।
anantaś cātmā viśvarūpo hy akartā trayaṃ yadā vindate brahmam etat ॥

There are two, one knowing (îsvara), the other not-knowing (gîva), both unborn, one strong, the other weak; there is she, the unborn, through whom each man receives the recompense of his works; and there is the infinite Self (appearing) under all forms, but himself inactive. When a man finds out these three, that is Brahma.

F. Max Müller · The Upanishads, Sacred Books of the East 15 (1884)