śrī-bhagavān uvāca bhūya eva mahā-bāho śṛṇu me paramaṁ vacaḥ yat te ’haṁ prīyamāṇāya vakṣyāmi hita-kāmyayā
Universal Translation
Thy right is to work only, but never to its fruits; let not the fruit of action be thy motive, nor let thy attachment be to inaction.