siddhim prapto yatha brahma
tathapnoti nibodha me
samasenaiva kaunteya
nistha jnanasya ya para
siddhimperfection; praptahachieving; yathaas; brahmathe Supreme; tathaso; apnotiachieves; nibodhatry to understand; mefrom Me; samasenasummarily; evacertainly; kaunteyaO son of Kunti; nisthastage; jnanasyaof knowledge; yawhich; paratranscendental.
O son of Kunti, learn from Me in brief how one can attain to the supreme perfectional stage, Brahman, by acting in the way which 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 Krsna consciousness; that is described in the following verses.

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