Om Swami
How can I do my duty without getting trapped in karma's bondage?
Act like the seekers of old
Whoever understands that karmas do not affect Bhagwan and that he does not desire their results is not caught in the bondage of karma. Seekers of liberation of old acted knowing this, so follow the wise seekers of old and do your duty.
Even in ancient times, those who wished for liberation acted knowing this truth. So you too, following the path shown by those wise ones, perform your duty.