क्षेत्रक्षेत्रज्ञयोरेवमन्तरं ज्ञानचक्षुषा ।
भूतप्रकृतिमोक्षं च ये विदुर्यान्ति ते परम् ॥ — 13.34, BG.
Meaning: They who by the eye of wisdom perceive the distinction between kShetra and KShetrajna, and the dissolution of the Cause of beings, they go to the Supreme.
Shankara comments: “They who in this manner perceive the exact distinction, now pointed out, between kShetra (the perceived field which includes the body-mind) and kShetrajna (the Knower of the field – the Inner Self), by the eye of Wisdom, by means of that Knowledge of the Self which has been generated by the teachings of the shAstra and the Acharya, and who also perceive the non-existence of prakriti (world), avidyA (ignorance), avyakta (unmanifest), the material cause of beings, they reach brahman, the Real, the Supreme Self, and assume no more bodies.