ŚVETĀŚVATARA UPANISHAD · 6.8

न तस्य कार्यं करणं च विद्यते न तत्समश् चाभ्यधिकश् च दृश्यते ।
परास्य शक्तिर् विविधैव श्रूयते स्वाभाविकी ज्ञानबलक्रिया च ॥

na tasya kāryaṃ karaṇaṃ ca vidyate na tatsamaś cābhyadhikaś ca dṛśyate ।
parāsya śaktir vividhaiva śrūyate svābhāvikī jñānabalakriyā ca ॥

There is no effect and no cause known of him, no one is seen like unto him or better; his high power is revealed as manifold, as inherent, acting as force and knowledge.