स्वधर्ममपि चावेक्ष्य न विकम्पितुमर्हसि | धर्म्याद्धि युद्धाच्छ्रेयोऽन्यत्क्षत्रियस्य न विद्यते ||२-३१||
svadharmamapi cāvekṣya na vikampitumarhasi . dharmyāddhi yuddhācchreyo.anyatkṣatriyasya na vidyate ||2-31||
Chapter 2 · Verse 31
Sankhya Yoga
सांख्ययोग
In plain words
You are being called to stand firm and carry out your personal dharma, which is your righteous duty in life. As a warrior, wavering in the face of a just cause is unworthy of you. Embracing your duty with courage is the highest path, bringing you ultimate good. Do not hesitate to do what is right.
Translation
2.31 Further, considering also your own duty, it does not befit you to waver. For, to a Ksatriya, there is no greater good than a righteous war.
Meaning
Lord Krishna now gives to Arjuna wordly reasons for fighting. Up to this time. He talked to Arjuna on the immortality of the Self and gave him philosophical reasons. Now He says to Arjuna. O Arjuna Fighting is a Kshatriyas own duty. You ought not to swerve from that duty. To a Kshatriyta (one born in the warrior or ruling class) nothing is more welcome than a righteous war. A warrior should fight.
Word by word
स्वधर्मम् own duty अपि also च and अवेक्ष्य looking at न not विकम्पितुम् to waver अर्हसि (thou) oughtest धर्म्यात् than righteous हि indeed युद्धात् than war श्रेयः higher अन्यत् other क्षत्रियस्य of a Kshatriya न not विद्यते is.