The next chapter (after Karma Yoga) is called, Karma Sanyasa Yoga, where Krishna says that sanyasa is not giving up activity but not getting caught up by the results of the activity. Let go and Rejoice! Tena Taktyena Bhunjita which means you do your work, but don’t get caught up with the results of the act. If it is good – fine. If t is not good – also fine.