Chapter 15 · verse 12 · gita.yoga.org
Bhagavad Gita 15.12
यदादित्यगतं तेजो जगद्भासयतेऽखिलम्।यच्चन्द्रमसि यच्चाग्नौ तत्तेजो विद्धि मामकम्
That light which resides in the sun, illuminating the whole world; that which is in the moon and in the fire—know that light to be Mine.