Sanskrit
यदादित्यगतं तेजो जगद्भासयतेऽखिलम् । यच्चन्द्रमसि यच्चाग्नौ तत्तेजो विद्धि मामकम् ॥
yad ādityagataṃ tejo jagad bhāsayate 'khilam yac candramasi yac cāgnau tat tejo viddhi māmakam
Translation
That splendour issuing from the sun that enlighteneth the whole world, that which is in the moon and in fire, that splendour know as from Me.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
The chapter pivots here from psychology and metaphysics into Krishna narrating his own presence in natural phenomena, a compressed reprise of the vibhuti (manifestation) teaching that occupied the whole of chapter 10. Sun, moon, and fire were named in verse 6 as things the supreme abode does not need; here the same three are reclaimed as places where Krishna’s own light shows up in the ordinary world — a pointed structural pairing, transcendent beyond light and immanent as light in successive verses.