CC Madhya 24.117
hareḥ — of Lord Kṛṣṇa; guṇa-ākṣipta-matiḥ — whose mind was agitated by the qualities; bhagavān — the most powerful transcendentalist; bādarāyaṇiḥ — Śukadeva, son of Vyāsadeva; adhyagāt — studied; mahat-ākhyānam — the great epic description; nityam — eternally; viṣṇu-jana-priyaḥ — who is very dear to the Vaiṣṇavas, devotees of Lord Viṣṇu.
“ ‘Being very much attracted by the transcendental pastimes of the Lord, the mind of Śrīla Śukadeva Gosvāmī was agitated by Kṛṣṇa consciousness. He therefore began to study Śrīmad-Bhāgavatam by the grace of his father.’
This is a quotation from Śrīmad-Bhāgavatam (1.7.11).