Bhagavad Gita 11.18

त्वमाक्षरं परमं वेदितव्यं त्वमस्य विश्वस्य परं निधनम् |
त्वमव्ययः शाश्वतधर्मगोप्त सनातनस्त्वं पुरुषो मतो मे

Translation

I recognize You as the supreme imperishable being, the Ultimate Truth to be known by the scriptures. You are the support of all creation; You are the eternal protector of Sanātan Dharma (the Eternal Religion); and You are the everlasting Supreme Divine Personality.