Bhagavatapurana 9.22.22

9.22.22

vedagupto muniḥ kṛṣṇo yato 'hamidamadhyagām /
hitvā svaśiṣyān pailādīn bhagavān bādarāyaṇaḥ //

22. —The sage Krishna (Dwaipayana), protector of the Vedas, from whom I learned this. In preference to his disciples, Pila and others, the glorious Badarayana taught this most secret Bhagavata to me, his son possessed of a serene mind.