Bhagavad Gita Chapter 3, Verse 22

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

na me pārthāsti kartavyaṁ triṣu lokeṣu kiñcana nānavāptam avāptavyaṁ varta eva ca karmaṇi

O Arjuna, there is nothing in the three worlds that I must do, nor anything unattained that I should obtain—yet I still engage in action.

Krishna makes himself the ultimate example. 'Na me pārthāsti kartavyaṁ triṣu lokeṣu kiñcana'—I have no duty in all three worlds. I'm complete, lacking nothing (nānavāptam avāptavyam). Yet 'varte eva ca karmaṇi'—I still engage in action. Why? For lok-sangraha (welfare of the world). God doesn't need to act—no compulsion, no unfulfilled desire—but does anyway to set the right example (pramāṇam). If even the Supreme acts, what excuse do we have? This demolishes the idea that enlightened people withdraw. Even perfection stays engaged.