Bhagavad Gita · Chapter 18: Freedom through Renunciation

Bhagavad Gita 18.9

kāryamityeva yatkarma niyataṃ kriyate'rjuna | saṅgaṃ tyaktvā phalaṃ caiva sa tyāgaḥ sāttviko mataḥ ||

When a required action is done simply because it ought to be done, Arjuna, giving up attachment and giving up the fruit, that relinquishment is held to be of clarity.

Modern context

Sattvic relinquishment: doing what is required simply because it ought to be done, without attachment and without desire for the fruit. This is the Gita's ideal. Notice that the action is not abandoned at all. What is abandoned is the clinging and the craving. The work goes on; the selfishness drops away.