SB 11.2.11
sri-narada uvaca
samyag etad vyavasitam
bhavata satvatarsabha
yat prcchase bhagavatan
dharmams tvam visva-bhavanan
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Sri Narada said: O best of the Satvatas, you have quite correctly asked about the eternal duty of the living entity toward the Supreme Lord. Such devotional service to the Lord is so potent that its performance can purify the entire universe.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
A similar statement was made by Sri Sukadeva Gosvami in the first verse of the Second Canto when he congratulated Pariksit Maharaja for asking about Krsna.
variyan esa te prasnah
krto loka-hitam nrpa
atmavit-sammatah pumsam
srotavyadisu yah parah
“My dear King, your question is glorious because it is very beneficial to all kinds of people. The answer to this question is the prime subject matter for hearing, and it is approved by all transcendentalists.”
Similarly, Srila Suta Gosvami congratulated the inquiring sages of Naimisaranya in the following words:
munayah sadhu prsto ’ham
bhavadbhir loka-mangalam
yat krtah krsna-samprasno
yenatma suprasidati
“O sages, I have been justly questioned by you. Your questions are worthy because they relate to Lord Krsna and so are of relevance to the world’s welfare. Only questions of this sort are capable of completely satisfying the self.” (Bhag. 1.2.5)
Narada will now answer Vasudeva’s inquiry about the process of devotional service. Later, at the end of their conversation, he will reply to Vasudeva’s comments about Vasudeva’s own faulty intentions.