Bhagavad Gita Chapter 9.17
pitāham asya jagato
mātā dhātā pitāmahaḥ
vedyaḿ pavitram oḿ-kāra
ṛk sāma yajur eva ca
Translation
I am the father of this universe, the mother, the support and the grandsire. I am the object of knowledge, the purifier and the syllable om. I am also the Rig, the Sama and the Yajur Vedas.