Bhagavad Gita 9.17

पितृहमस्य जगतो माता धाता पितामह: |
वेद्यं पवित्रमोङ्कर ऋक्साम यजुरेव च

Translation

Of this universe, I am the Father; I am also the Mother, the Sustainer, and the Grandsire. I am the purifier, the goal of knowledge, the sacred syllable Om. I am the Ṛig Veda, Sāma Veda, and the Yajur Veda.