Mahabharata 3.190.1

3.190.1

vaiśaṃpāyana uvāca |
bhūya eva brāhmaṇamahābhāgyaṃ vaktumarhasītyabravītpāṇḍaveyo mārkaṇḍeyam || 1 ||

Janamejaya said, "It behoveth thee to narrate to me in full the greatness of the Brahmanas even as the mighty ascetic Markandeya had expounded it to the sons of Pandu."

"Vaisampayana said, 'The eldest son of Pandu had asked Markandeya saying, 'It behoveth thee to expound to me the greatness of Brahmanas.' Markandeya answered him saying, 'Hear, O king, about the behaviour of Brahmanas in days of old.'