स्वधर्ममपि चावेक्ष्य न विकम्पितुमर्हसि ।धर्म्याद्धि युद्धाछ्रेयोऽन्यत्क्षत्रियस्य न विद्यते ॥
svadharmamapi cāvekṣya na vikampitumarhasi |dharmyāddhi yuddhāchreyo'nyatkṣatriyasya na vidyate ||
And considering your own duty, you should not waver. For a warrior, there is nothing better than a battle that upholds dharma.
Explanation
Krishna now turns from the nature of the self to Arjuna's own role in life. Arjuna is a warrior (kṣatriya), and his own duty (svadharma) is to protect people and uphold justice. Krishna says a war that is just and lawful (dharmya) offers a warrior the highest good (śreyas). Traditions generally read this as duty fitted to one's position, though they differ on how far it applies beyond Arjuna's situation.