Sanskrit

न मे पार्थास्ति कर्तव्यं त्रिषु लोकेषु किञ्चन। नानवाप्तमवाप्तव्यं वर्त एव च कर्मणि।।3.22।।

Summary

There is nothing in this universe, O Arjuna, that I am compelled to do, nor anything for me to attain; yet I persistently remain active.