Therefore, always act without attachment, doing the work that must be done. For a person who acts without attachment attains the Supreme.
Explanation
Krishna is answering Arjuna's reluctance to act. Having said that the self-realized person has nothing to gain or lose from action, he concludes that Arjuna should do his duty (kārya karma) without attachment (saṅga), meaning without clinging to results. Such disinterested action is said to lead to the Supreme (param); some commentators take this as the Supreme Self or liberation, others as God.