Bhagavad Gita · 9.17

पिताहमस्य जगतो माता धाता पितामहः।वेद्यं पवित्रमोंकार ऋक्साम यजुरेव च॥

pitāham asya jagato mātā dhātā pitāmahaḥ vedyaṁ pavitram oṁkāra ṛk sāma yajur eva cha

I am the father of this universe, the mother, the sustainer, and the grandsire. I am the object of all knowledge, the purifier, the sacred syllable Om, and the Rig, Sama, and Yajur Vedas.

— Bhagavad Gita 9.17

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)