Bhagwad Gita
Chapter 10, Verse 33
अक्षराणामकारोऽस्मि द्वन्द्वः सामासिकस्य च।
अहमेवाक्षयः कालो धाताऽहं विश्वतोमुखः।।10.33।।
Of letters I am the letter A, and among compounds I am the dual word. I am also inexhaustible time, and of creators, I am Brahma, whose manifold faces turn everywhere.