Ramya kaścid upāsanā vraja-vadhu-varga-vīrya kalpita, śrīmad-bhāgavatam amalaṁ purāṇam: "And Śrīmad-Bhāgavata is the spotless Vedic literature." Because Śrīmad-Bhāgavatam is full of Kṛṣṇa consciousness only. That's all. Just like this Bhagavad-gītā is full of Kṛṣṇa consciousness. It is the preliminary study of Śrīmad-Bhāgavatam. The last word of the Śrīmad-Bhagavad-gītā is that sarva-dharmān parityajya mām ekaṁ śaraṇaṁ vraja: (BG 18.66) "You give up everything. You just surrender unto Me," Kṛṣṇa said. One who accepts this philosophy—"I accept Kṛṣṇa as vāsudevaḥ sarvam iti sa mahātmā su-durlabhaḥ" (BG 7.19)—then for him Śrīmad-Bhāgavatam is the postgraduate study.