2.48 Abandoning the attachment to kingdom, relatives etc., and established in Yoga, engage in war and such other activities. Perform these with eanimity as regards success and failure resulting from victory etc., which are inherent in them. This eanimity with regard to success and failure is called here by the term Yoga, in the expression 'established in Yoga.' Yoga is eanimity of mind which takes the form of evenness in success and failure.

Sri Krsna explains why this is repeatedly said: