Srimad Bhagavatam Canto 11, Chapter 11, Text 49

SB 11.11.49

athaitat paramam guhyam
 srnvato yadu-nandana
su-gopyam api vaksyami
 tvam me bhrtyah suhrt sakha
My dear Uddhava, O beloved of the Yadu dynasty, because you are My servant, well-wisher and friend, I shall now speak to you the most confidential knowledge. Please hear as I explain these great mysteries to you.
It is stated in the First Chapter of Srimad-Bhagavatam (1.1.8), bruyuh snigdhasya sisyasya guravo guhyam apy uta: a bona fide spiritual master naturally reveals all transcendental secrets to a sincere disciple. Sri Uddhava had completely surrendered to Lord Krsna, and then only could the Lord explain such mysteries to him, because without complete faith the transmission of spiritual knowledge is impossible. Other processes of self realization, such as philosophical speculation, are imperfect and unsteady because the performer has personal desires, and there is no definite procedure by which to obtain the full mercy of the Supreme Lord. On the other hand, association with the pure devotees of the Lord is a self-sufficient process that is guaranteed to award the desired result. One must only learn how to associate with the pure devotees and one’s life will be perfect. That is the sum and substance of this chapter.
Thus end the purports of the humble servants of His Divine Grace A.C. Bhaktivedanta Swami Prabhupada to the Eleventh Canto, Eleventh Chapter, of the Srimad-Bhagavatam, entitled “The Symptoms of Conditioned and Liberated Living Entities.”
Srimad Bhagavatam Canto 11, Chapter 11, Text 48
Srimad Bhagavatam Canto 11, Chapter 11 Narration