Bhagavad Gita · Chapter 2: The Path of Understanding
Bhagavad Gita 2.51
कर्मजं बुद्धियुक्ता हि फलं त्यक्त्वा मनीषिणः ।
जन्मबन्धविनिर्मुक्ताः पदं गच्छन्त्यनामयम् ॥
karmajaṃ buddhiyuktā hi phalaṃ tyaktvā manīṣiṇaḥ | janmabandhavinirmuktāḥ padaṃ gacchantyanāmayam ||
The wise, their understanding disciplined, give up the fruit that action produces. Freed from the bondage of birth, they reach the state that is beyond all sorrow.
Modern context
Giving up the fruit does not mean giving up the work or its results; they will come as they come. It means not living off them. Krishna says this leads to a state without sorrow. Even in a small way we know it: the hours when we were absorbed in doing something well, with no thought of reward, are among the freest we have had.