CC Madhya 19.115
saba śikhāila prabhu bhāgavata-siddhānta
kṛṣṇa-tattva — of the truth about Lord Kṛṣṇa; bhakti-tattva — of the truth about devotional service; rasa-tattva — of the truth about transcendental mellows; prānta — the ultimate limit; saba — all; śikhāila — taught; prabhu — Śrī Caitanya Mahāprabhu; bhāgavata-siddhānta — the conclusions of Śrīmad-Bhāgavatam.
Śrī Caitanya Mahāprabhu taught Śrīla Rūpa Gosvāmī the ultimate limit of the truth about Lord Kṛṣṇa, the truth about devotional service and the truth about transcendental mellows, culminating in conjugal love between Rādhā and Kṛṣṇa. Finally He told Rūpa Gosvāmī about the ultimate conclusions of Śrīmad-Bhāgavatam.