CC Antya 4.219

sanātana grantha kailā ‘bhāgavatāmṛte’
bhakta-bhakti-kṛṣṇa-tattva jāni yāhā haite
Synonyms: 
sanātana — Sanātana Gosvāmī; grantha — books; kailā — compiled; bhāgavatāmṛte — in the Bṛhad-bhāgavatāmṛta; bhakta — devotee; bhakti — devotional service; kṛṣṇa-tattva — Kṛṣṇa, the Absolute Truth; jāni — we know; yāhā haite — from which.
Translation: 
Śrīla Sanātana Gosvāmī compiled the Bṛhad-bhāgavatāmṛta. From this book one can understand who is a devotee, what is the process of devotional service, and who is Kṛṣṇa, the Absolute Truth.