Thy motive, not the fruit which comes from them.
Krishna has explained that the soul is eternal and indestructible — grief for the body is misplaced. Now he lays down the foundational principle of Karma Yoga: act from duty, not from desire for results. This verse is the philosophical cornerstone of the entire text.
Perhaps the Gita’s single most famous verse. Quoted by Gandhi, Oppenheimer, and countless others as the essence of selfless action.