Chapter 18, Verse 23
Part of 18: Mokṣha Sanyās Yog — मोक्षसंन्यासयोगनियतं सङ्गरहितमरागद्वेषतः कृतम्।अफलप्रेप्सुना कर्म यत्तत्सात्त्विकमुच्यते॥
niyataṁ saṅga-rahitam arāga-dveṣhataḥ kṛitam aphala-prepsunā karma yat tat sāttvikam uchyate
An action that is ordained, free from attachment, done without love or hatred, and without desire for reward is declared to be Sattvic.
Niyatam Ordained Obligatory. One is not excited to perform an obligatory action through love or hatred. This is a pure act. The performer of such pure action experiences great joy. He does his duty or any other work wholeheartedly not caring for the reward but offering it willingly at the feet of the Lord. He works in accordancw with the dictates of the scriptures. Now I will explain to thee? O Arjuna, the nature of action which is Rajasic or passionate. Do thou listen to Me with rapt attention.