A Kshatriya, when challenged, must always fight in battle, for Manu has said that a righteous battle acquire both heaven and fame on Earth for him.
आहूतेन रणे नित्यं योद्धव्यं क्षत्रबन्धुना। धर्म्यं स्वर्यं च लोक्यं च युद्धं हि मनुरब्रवीत्॥