18:26  

मुक्तसङ्गोऽनहंवादी धृत्युत्साहसमन्वितः ।
सिद्ध्यसिद्ध्योर्निर्विकारः कर्ता सात्त्विक उच्यते ॥१८- २६॥

Transliteration

muktasa~Ngo'nahaMwaadii dhRRityutsaahasamanwitaH ।

siddhyasiddhyornirwikaaraH kartaa saattwika uchyate ॥१८- २६॥

Translation

Liberated from attachment, non-egotistical, absorbed in resolute enthusiasm,
Unaffected by accomplishment/failure: [This] actor is called sattvic.

Translation

The agent who is free from attachment, is non-egotistic, endowed with resolve and enthusiasm, and unperturbed in success or failure is called Saattvika.

Translation

The worker who is free from all material attachments and false ego, who is enthusiastic and resolute and who is indifferent to success or failure, is a worker in the mode of goodness.