प्रचेतसां नारदस्य संवादं हरिकीर्तनम् ॥ २५ ॥
yan māṁ tvaṁ paripṛṣṭavān
My dear Vidura, I have told you everything you wanted to know about the conversation between Nārada and the Pracetās, the conversation describing the glories of the Lord. I have related this as far as possible.
Śrīmad-Bhāgavatam describes the glories of the Lord and His devotees. Because the whole subject matter is the glorification of the Lord, naturally the glorification of His devotees automatically follows.