Chapter 18, Verse 26
Part of 18: Mokṣha Sanyās Yog — मोक्षसंन्यासयोगमुक्तसङ्गोऽनहंवादी धृत्युत्साहसमन्वितः।सिद्ध्यसिद्ध्योर्निर्विकारः कर्ता सात्त्विक उच्यते॥
mukta-saṅgo ‘nahaṁ-vādī dhṛity-utsāha-samanvitaḥ siddhy-asiddhyor nirvikāraḥ kartā sāttvika uchyate
An agent who is free from attachment, non-egoistic, endowed with firmness and enthusiasm, and unaffected by success or failure, is considered to be of a Sattvic (pure) nature.
A pure agent does his actions with his whole heart without feeling proud at the performance. He looks for the proper time and place and in accordance with the behests of the scriptures determines whether such actions are worth doing or not. He develops courage and a powerful will. He never seeks physical comforts. He is ite prepared to sacrifice his life for a noble cause. He is neither elated by success nor grieved by failure. He always keeps a balanced mind when he does any action. O Arjuna, that man is a pure agent who, while working, exhibits such alities. Siddhi Success attainment of the fruit of action performed. Nirvikarah Unaffected as having been urged to act merely by the authority of the scriptures, not by a desire for the sake of the reward. Now I will tell thee? O Arjuna, of the characteristics of a passionate agent.