Bhagavatapurana 4.29.51

4.29.51

sa vai priyatamaś cātmā yato na bhayam aṇv api /
iti veda sa vai vidvān yo vidvān sa gurur hariḥ //

51. He is indeed the most beloved One and Atman from whom there is no fear whatever (for the refugee)—he who knows this, is in truth the Vidvan, learned man; he who is such a Vidvan is the Preceptor, and he is Hari himself.