srutam etan maya purvam
dharmam bhagavatam suddham
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Prahlada Maharaja continued: I received this knowledge from the great saint Narada Muni, who is always engaged in devotional service. This knowledge, which is called bhagavata-dharma, is fully scientific. It is based on logic and philosophy and is free from all material contamination.