मुक्तसङ्गोऽनहंवादी धृत्युत्साहसमन्वितः।सिद्ध्यसिद्ध्योर्निर्विकारः कर्ता सात्त्विक उच्यते।।18.26।।
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.