एवं भूतो वा समः सामन्तायत्तकार्यः कर्तव्यबलो वा बलसमाद्विशिष्टेन लाभेन पणेत ॥ कZ_०७.७.२० ॥
evaṃ bhūto vā samaḥ sāmantāyattakāryaḥ kartavyabalo vā balasamādviśiṣṭena lābhena paṇeta
If (the neighbour) is of this kind and is equal in strength, and his undertaking depends on the neighbour, or if he must build up requisite force, he should bargain by offering a gain superior to what is obtainable under mere parity of power.
Use bargaining by offering a benefit better than what parity alone would yield—especially if you need time or conditions to build strength.
To secure compliance/time/strategic positioning when coercion is not cost-effective and force must be accumulated.