Thus this most secret teaching, has been spoken by Me, O Sinless one (Anagha). Having understood this, one would become wise, and one who has accomplished his duties (kṛtakṛtya), O descendant of Bharata (Bhārata).
Arjuna, thus I have taught this most secret tradition; realizing it, one has understanding and his purpose is fulfilled.
(20) And so have I [at last] revealed this most, mysterious doctrine: let a man but understand it, for then he will be a man who [truly] understands, his [life's] work done.
15.20 O sinless one, this most secret scripture has thus been uttered by Me. Understanding this, one becomes wise and has his duties fulfilled, O scion of the Bhārata dynasty.
15.20 Thus, O sinless one, has this most mysterious doctrine been imparted by Me. By understanding this, a man will become truly wise and will have fulfilled his duty.
15.20 Thus, this most secret science has been taught by Me, O sinless one; on knowing this, a man becomes wise, and all his duties are accomplished, O Arjuna.