Arthashastra
स्व धर्मश् च एष क्षत्रियस्य, युद्धे जयः पराजयो वा" इति विशाल अक्षः ॥
this (fighting) is the natural duty of a Kshatriya, no matter whether he achieves victory or sustains defeat in battle.
english translation
sva dharmaz ca eSa kSatriyasya, yuddhe jayaH parAjayo vA" iti vizAla akSaH ॥
hk transliteration by Sanscript