Verse
कार्यमित्येव यत्कर्म नियतं क्रियतेऽर्जुन ।सङ्गं त्यक्त्वा फलं चैव स त्यागः सात्त्विको मतः ॥
He who performs a rightly regulated action, because it has to be done, without any attachment either to the action or to the fruit of the action, that renunciation is regarded as sattwic.
Gītā 18·9