Arthashastra
कृत्य पक्ष उपग्रहेण वा परस्य अमित्रं राजानम् आत्मन्य् अपकारयित्वा अभियुञ्जीत ॥
Or, by seizing an opportune moment, a king may cause an enemy king to act against his own interests and then attack him.
english translation
kRtya pakSa upagraheNa vA parasya amitraM rAjAnam Atmany apakArayitvA abhiyuJjIta ॥
hk transliteration by Sanscript