Bhagavad Gita 9.17

पिताऽहमस्य जगतो माता धाता पितामहः।वेद्यं पवित्रमोंकार ऋक् साम यजुरेव च ॥९.१७॥

pitā’hamasya jagato mātā dhātā pitāmahaḥvedyaṃ pavitramoṃkāra ṛk sāma yajureva ca

I am the father of this world, the mother, the dispenser of the fruits of actions, and the grandfather; the one thing to be known, the purifier, the sacred monosyllable (Om), and also the Rik, Sama, and Yajur Vedas.

गीता