Moksa Opadesa Yoga: Bhagavad Gita Chapter 18 [Final Revelations of the Ultimate Truth]
Krishna Said > Shaloka: 50
O son of Kunti, learn from Me in brief how one can attain to the supreme perfectional stage, Brahman, by acting in the way I shall now summarize.
The Lord describes for Arjuna how one can achieve the highest perfectional stage simply by being engaged in his occupational duty, performing that duty for the Supreme Personality of Godhead. One attains the supreme stage of Brahman simply by renouncing the result of his work for the satisfaction of the Supreme Lord. That is the process of self-realization. Actual perfection of knowledge is in attaining pure Krishna consciousness; that is described in the following verses.