भेदमुभयोर्वा परस्परापदेशं प्रयुञ्जीत भिन्नयोरुपांशुदण्डम् ॥ कZ_०७.२.१५ ॥
bhedam ubhayor vā parasparāpadeśaṃ prayuñjīta bhinnayor upāṃśudaṇḍam
He should employ dissension between both (parties), or mutual accusations; once they are divided, he should apply punishment covertly.
Division reduces coordinated resistance; covert action preserves deniability and prevents reunification against the instigator.