Arthashastra
प्रायशश् च आचार्याः "पर व्यसने यातव्यम्" इत्य् उपदिशन्ति ॥
My teacher says that one should almost invariably march against an enemy in troubles.
english translation
prAyazaz ca AcAryAH "para vyasane yAtavyam" ity upadizanti ॥
hk transliteration by Sanscript