प्रायशश्चाचार्याः परव्यसने यातव्यमित्युपदिशन्ति ॥ कZ_०९.१.४२ ॥
prāyaśaścācāryāḥ paravyasane yātavyam ity upadiśanti
En général, les maîtres conseillent : «il faut marcher lorsque l’ennemi est en détresse (vyasana)».
Exploit adversary vulnerability: initiate operations when the opponent is distracted, weakened, or administratively stressed.