सिद्ध्यसिद्ध्योर्निर्विकारः कर्ता सात्त्विक उच्यते।।18.26।।
18.26 [Ast. introduces this verse with Idanim kartrbhedah ucyate, Now is being stated the distinctions among the agents.-Tr.] The agent who is free from attachment [Attachment to results or the idea of agentship.], not egotistic, endowed with fortitude and diligence, and unperturbed by success and failure is said to be possessed of sattva.
18.26 Muktasangah is one who is free from attachment to fruits. Anahamvadi is one who is devoid of the feeling of being the agent. He is endued with steadiness and zeal. Steadiness is perseverance in regard to an act that has been begun in spite of the pain that is inevitable till the completion of the work. Zeal is the possession of an active mind. One who is enduded with these, and whose mind remains firm, untouched by success and failure in war etc., and also in gathering the material reisities for the work on hand - such an agent is, of Sattvika nature.
Muktasango’nahamvaadi dhrityutsaahasamanvitah; Siddhyasiddhyor nirvikaarah kartaa saattwika uchyate.
mukta-saṅgaḥ—free from worldly attachment; anaham-vādī—free from ego; dhṛiti—strong resolve; utsāha—zeal; samanvitaḥ—endowed with; siddhi-asiddhyoḥ—in success and failure; nirvikāraḥ—unaffected; kartā—worker; sāttvikaḥ—in the mode of goodness; uchyate—is said to be