नदीदुर्गं तु द्विगुणक्लेशकरमुदकं च पातव्यं वृत्तिकरं चामित्रस्य ॥ कZ_०७.१०.३० ॥
nadīdurgaṃ tu dviguṇakleśakaram udakaṃ ca pātavyaṃ vṛttikaraṃ cāmitrasya
Namun kubu sungai menimbulkan kesukaran berganda: perlu berdepan (dan bergantung) pada air, dan air yang sama itu pula menyara kehidupan serta daya tahan musuh.
Because the attacker’s operations become water-constrained while the defender gains reliable sustainment from the same water source.