Subhashitam - 18

कर्मण्येवाधिकारस्ते मा फलेषु कदाचन ।
मा कर्मफल हेतुर्भूर्मा ते सङ्गोस्त्वकर्मणि ॥

Meaning:
Your right is to work only, but never to the fruit thereof. Be not instrumental in making your actions bear fruit, nor let your attachment be to inaction.