Chapter 9 · verse 17 · gita.yoga.org

Bhagavad Gita 9.17

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

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.