परानीकस्य प्रत्यनीकं मित्राटवीनां वा शत्रोर्विभूमीनां देशिकं मूलपार्ष्णित्राणार्थं वा समो बलसमेन लाभेन पणेत ॥ कZ_०७.७.१६ ॥
parānīkasya pratyanīkaṃ mitrāṭavīnāṃ vā śatror vibhūmīnāṃ deśikaṃ mūlapārṣṇitrāṇārthaṃ vā samo balasamena lābhena paṇeta
An equal should bargain for an equal gain (matching forces for matching gain) in order to field a counter‑army against an enemy army, to secure the support of allied forest‑tribes, to obtain local forces in the enemy’s dispersed territories, or to protect one’s base and rear (root and heel).
Generating counter-force, mobilizing auxiliaries, tapping local resources in enemy zones, and securing the base/rear—core enabling conditions for sustained campaigns.