Srimad Bhagavatam, Mahatmyam, Chapter 3 Sloka 1: Naradaouvacha: Gnayana yagnam…Said Narada: In order to help Bhakti, Gnayana and Vairagya regain their strength, I shall narrate the story (Srimad Bhagavatam), as preached by Sage Sukha Muni, as a Yagna.
The learned Sanath Kumaras continue to tell Sage Narada the following: By mere listening to Srimad Bhagavatam, Bhakti, Gyana (wisdom) and Vairagya (detachment) would gain strength. Gyana and Vairagya would be able to stay without getting weak. Bhakti will be extremely contended. That is the power of the Holy Text.