Chapter XIII · Śloka 34
यथा प्रकाशयत्येकः कृत्स्नं लोकमिमं रविः ।
क्षेत्रं क्षेत्री तथा कृत्स्नं प्रकाशयति भारत ॥
क्षेत्रं क्षेत्री तथा कृत्स्नं प्रकाशयति भारत ॥
yathā prakāśayaty ekaḥ kṛtsnaṃ lokam imaṃ raviḥ |
kṣetraṃ kṣetrī tathā kṛtsnaṃ prakāśayati bhārata ||
kṣetraṃ kṣetrī tathā kṛtsnaṃ prakāśayati bhārata ||
Just as the one sun illumines this entire world, so the Owner of the field (kṣetrī) illumines the entire field, O Bhārata.
The sun analogy: one sun lights an entire world without multiplying itself; one Ātman illumines the entire body-mind field without becoming many. The Kṣetrī (Ātman as owner of the field) is pure self-luminous awareness that makes all experience possible.