अमित्राद्वा सत्त्री भेदयेदेनं अयं त्वा योगपुरुषं मन्यमानो भर्तर्येव विक्रमयिष्यति अवाप्तार्थो दण्डचारिणममित्राटविकेषु कृच्छ्रे वा प्रयासे योक्ष्यति विपुत्रदारमन्ते वा वासयिष्यति ॥ कZ_०९.३.२६ ॥
amitrād vā sattrī bhedayed enaṃ: ayaṃ tvā yogapuruṣaṃ manyamāno bhartary eva vikramayiṣyati; avāptārtho daṇḍacāriṇam amitrāṭavikeṣu kṛcchre vā prayāse yokṣyati, viputradāram ante vā vāsayiṣyati
Or an agent (sattrī) should estrange him from the enemy by telling him: ‘Thinking you to be a covert operative (yogapuruṣa), he will make you act only against your own master. Once he has gained his objective, he will employ you—an instrument of coercion—among hostile forest-tracts or in harsh and exhausting tasks; and in the end he will settle you in ruin, bereft of sons and wife.’
Use a trusted covert messenger to reframe the enemy as exploitative—someone who will use the person against their own side and discard them after extracting value.
To make defection appear materially and socially catastrophic (dangerous assignments, loss of family standing), increasing loyalty through negative incentive.