Bhagavatapurana 4.25.10

4.25.10

āsīt purañjano nāma rājā rājan bṛhac-chravāḥ /
tasyāvijñāta-nāmāsīt sakhāvijñāta-ceṣṭitaḥ //

10. There was a king well known as Puranjana of extensive learning. O king! he had a friend whose name and behaviour were not known. (or, but who is known by his work).