पूर्वे च प्रहरणकालाः कूटयुद्धहेतवः ॥ कZ_१०.३.२५ ॥
pūrve ca praharaṇakālāḥ kūṭayuddhahetavaḥ
あらかじめ(取り決めた)打撃の時刻は、隠密・詭計の戦(kūṭayuddha)の根拠となる。
It separates open, declared battle from operations where timing is privately fixed for advantage—i.e., planning that relies on surprise and concealment rather than mutually agreed engagement.