योगस्थः कुरु कर्माणि सङ्गं त्यक्त्वा धनंजय
सिद्ध्यसिद्ध्योः समो भूत्वा समत्वं योग उच्यते
yogasthaḥ kuru karmāṇi saṅgaṃ tyaktvā dhanaṃjaya
siddhyasiddhyoḥ samo bhūtvā samatvaṃ yoga ucyate
TRANSLATION
Abandoning attachment and established in Yoga, perform works, viewing success and failure with an even mind. Evenness of mind is said to be Yoga.
PURPORT
Abandoning the attachment to kingdom, relatives etc., and established in Yoga, engage in war and such other activities. Perform these with equanimity as regards success and failure resulting from victory etc., which are inherent in them. This equanimity with regard to success and failure is called here by the term Yoga, in the expression ‘established in Yoga.’ Yoga is equanimity of mind which takes the form of evenness in success and failure.
Shri Krishna explains why this is repeatedly said: