Bhagavad Gita Verse 5.12

कर्मयोगी कर्मोंके कर्मोंके फलका त्याग करके भगवत्प्राप्तिरूप शान्तिको प्राप्त होता है और सकाम पुरुष कामनाकी प्रेरणासे फलमें आसक्त होकर बँधता है|

When a Yogi has reached a state of true self-realization by leaving all fruits and results of Karma in the hands of the Lord, he achieves true peace and happiness.However, he who does Karma (actions) for a selfish motive and for the attainment of fruits of his actions, never becomes free of the bondages of desire for material pleasures.