Bhagavad Gita 15.12
Remember that the light which proceeds from the sun, illuminating the whole world, and the light which is in the moon, and that which is in the fire, all are born of me.
यदादित्यगतं तेजो जगद्भासयतेऽखिलम्।यच्चन्द्रमसि यच्चाग्नौ तत्तेजो विद्धि मामकम्॥yadādityagataṃ tejo jagadbhāsayate'khilam|yaccandramasi yaccāgnau tattejo viddhi māmakam||
English translation (above): Shri Purohit Swami (1935), public domain. Sanskrit text via github.com/gita/gita (Unlicense).