Verse 10

यः कुर्वन्सर्वकार्याणि पुण्ये नष्टेऽथ तत्फले ।समः सन्सर्वकार्येषु न तुष्यति न शोचति

In plain words

He who, performing all actions -- when the merit is lost, and then its fruit -- remains even in all deeds and neither rejoices nor grieves --