Mahabharata 12.81.3

भीष्म उवाच · bhīṣma uvāca

चतुर्विधानि मित्राणि राज्ञां राजन्भवन्त्युतसहार्थो भजमानश्च सहजः कृत्रिमस्तथा

caturvidhāni mitrāṇi rājñāṃ rājanbhavantyutasahārtho bhajamānaśca sahajaḥ kṛtrimastathā

Our plain-language meaning of this verse is waiting for scholar review.