An agent who is free from attachment non-egoistic endowed with firmness and enthusiasm and unaffected by success or failure is called SATTVIC (pure) .

muktasaṅgaḥ = liberated from all material association; anahaṃvādi = without false ego; dhṛti = with determination; utsāha = and great enthusiasm; samanvitaḥ = qualified; siddhi = in perfection; asiddhyoḥ = and failure; nirvikāraḥ = without change; kartā = worker; sāttvikaḥ = in the mode of goodness; ucyate = is said to be.;