na dveshtyakushalam karma kushale naanushajjate |
tyaagee sattvasamaavishto medhaavee chinnasamshayaha || 10 ||

He does not dislike inauspicious action, nor does he get attached to auspicious action, he who gives up is pervaded by sattva, is wise, and free of doubts.
na : not
dveshti : dislike
akushalam : inauspicious
karma : action
kushale : auspicious
na : not
anushajjate : attached
tyaagee : that one who gives up
sattvasamaavishtaha : pervaded by sattva
medhaavee : wise
chinnasamshayaha : free of doubts
So far, three types of renunciation or giving up were described. Shri Krishna now describes the nature of the person who conducts renunciation in the proper manner, the saattvic tyaagi. Such a person is pervaded by sattva. This means that his intellect is able to discriminate between what is real and what is not, in other words, what is the eternal essence and what is the illusory world. This person is described as medhaavee, one who is wise due to the knowledge of the eternal essence, the self.
What makes this person different than the other so-called renouncers? It is his indifferent attitude towards action. Though he knows that every action has the potential to generate further sorrow and further desires, he does not hate that action but in fact, continues to do his duty. Conversely, though he knows that doing his duty will eventually make him fit for liberation, or if there is some action that he loves to perform, he does not develop a sense of attachment for it.
Eventually, a slow transformation takes place in such a person. Performing karma yoga, which is the same as performing saattvika tyaaga, leads a person to slowly recognize his true nature as the unchanging, unmoving eternal essence. He begins to realize that he is not performing any action at all, it is Prakriti that is doing all the work. When he comes to realize this, he becomes chinnasamshayaha, free of all doubts about who he really is, about his true nature.