सहायाभावे दुर्गमाश्रयेत यत्रामित्रः प्रभूतसैन्योऽपि भक्तयवसेन्धनोदकोपरोधं न कुर्यात्स्वयं च क्षयव्ययाभ्यां युज्येत ॥ कZ_०७.१५.०९ ॥
sahāyābhāve durgamāśrayeta yatrāmitraḥ prabhūtasainyo'pi bhaktayavasendhanodakoparodhaṃ na kuryātsvayaṃ ca kṣayavyayābhyāṃ yujyeta
同盟者がいない場合は、敵が大軍を有していても食糧・飼料・燃料・水の補給を有効に遮断できない要塞に拠るべきであり、そこで敵自身が消耗と出費(kṣaya–vyaya)を強いられる。
Occupy a fort that is hard to blockade for food, fodder, fuel, and water, so the besieger suffers attrition and high costs.