Bhagavatapurana 1.5.29

1.5.29

tasyaivaṃ me 'nuraktasya praśritasya hatainasaḥ /
śraddadhānasya bālasya dāntasyānucarasya ca //

29-30. Seeing that I was deeply taken up with their pious life and filled with a passion for it, and seeing also that I was humble, cleansed of sin, full of faith and that I had control over my passions and waited upon them, those ascetics, when about to depart, being naturally compassionate to the distressed, imparted to me who was still a young boy, that knowledge of the secret of secrets, known as the Bhagavata, which the Lord Himself directly revealed.