कर्मण्येवाधिकारस्ते मा फलेषु कदाचन।
मा कर्मफलहेतुर्भूर्मा ते सङ्गोऽस्त्वकर्मणि॥
You have a right to your action alone, never to its fruits. Let not the fruit of action be your motive, nor let your attachment be to inaction.
Bhagavad Gita 2.47