नदीपर्वतदुर्गीयाभ्यां नदीदुर्गीयाद्ब्भूमिलाभः श्रेयान् ॥ कZ_०७.१०.३१ ॥
nadīparvatadurgīyābhyāṃ nadīdurgīyād bhūmilābhaḥ śreyān
Antara lawan yang berkubu sungai dan yang berkubu gunung, perolehan wilayah lebih baik dilakukan daripada pihak yang berkubu sungai.
Mountain-forts are treated as harder/more dangerous than river-forts; hence, if choosing, take land from the river-fortified enemy first.