मित्रमुखानमित्रान्वर्धयितुमेते हि वृद्धास्त्वामेव परिभविष्यन्ति इति ॥ कZ_०७.१४.०१ ॥
mitramukhānamitrānvardhayitumete hi vṛddhāstvāmeva paribhaviṣyanti iti
‘Do not strengthen enemies who wear the face of friends; once they grow strong, they will themselves humiliate/overpower you’—so one should warn/admonish thus.
A hostile actor using cooperative posture—front diplomacy, proxy alignment, or opportunistic partnership—to gain capacity against you.