Sloka 18.77
तच्च संस्मृत्य संस्मृत्य रूपमत्यद्भुतं हरेः ।
विस्मयो मे महान् राजन् हृष्यामि च पुनः पुनः ॥
తచ్చ సంస్మృత్య సంస్మృత్య రూపమత్యద్భుతం హరేః ।
విస్మయో మే మహాన్ రాజన్ హృష్యామి చ పునః పునః ॥
tacca saṃsmṛtya saṃsmṛtya rūpamatyadbhutaṃ hareḥ |
vismayo me mahān rājan hṛṣyāmi ca punaḥ punaḥ ||
About chapter 18
The final chapter brings the whole teaching together. Krishna explains true renunciation as giving up attachment to the fruits of action, describes how the three qualities shape knowledge, action, intellect and happiness, and teaches that doing one’s own duty is worship. He gives his final instruction — to surrender to him alone (18.66) — and Arjuna, his doubts gone, rises to do his duty.