Arthashastra
राष्ट्र मुख्य अन्त पाल आटविक दण्ड उपनतानाम् अन्यतम कोपो बाह्य कोपः ॥
Whoever among these has strongly fortified himself should be caught hold of through the agency of a frontier king, or the chief of wild tribes, or a scion of his family, or an imprisoned prince.
english translation
rASTra mukhya anta pAla ATavika daNDa upanatAnAm anyatama kopo bAhya kopaH ॥
hk transliteration by Sanscript