Sloka 18.22
यत्तु कृत्स्नवदेकस्मिन्कार्ये सक्तमहैतुकम् ।
अतत्त्वार्थवदल्पं च तत्तामसमुदाहृतम् ॥
యత్తు కృత్స్నవదేకస్మిన్కార్యే సక్తమహైతుకమ్ ।
అతత్త్వార్థవదల్పం చ తత్తామసముదాహృతమ్ ॥
yattu kṛtsnavadekasminkārye saktamahaitukam |
atattvārthavadalpaṃ ca tattāmasamudāhṛtam ||
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.