उच्छेदनीयं वास्य मित्रं मध्यमो लिप्सेत कर्शितमेनं त्रायेत मध्यमवृद्धिभयात् ॥ कZ_०७.१८.१४ ॥
ucchedanīyaṃ vā 'sya mitraṃ madhyamo lipseta karśitam enaṃ trāyeta madhyama-vṛddhi-bhayāt
Or the Madhyama may seek to win over an ally who is fit to be eliminated; yet he should protect him once exhausted—out of fear of the Madhyama’s further growth (i.e., to prevent the rival’s excessive increase).
Because eliminating him may hand territory, revenue, or strategic position to a rival; preserving a weakened buffer can be preferable to rival consolidation.