śrī-rūpa-hṛdaye prabhu śakti sañcārilā
sarva-tattva-nirūpaṇe 'pravīṇa' karilā
śrī-rūpa-hṛdaye - in the heart of Śrīla Rūpa Gosvāmī; prabhu - Lord Śrī Caitanya Mahāprabhu; śakti sañcārilā - infused spiritual strength; sarva-tattva - all conclusive truths; nirūpaṇe - in ascertaining; pravīṇa karilā - made him fully experienced.
The principles of devotional service are only apparently under the jurisdiction of material activity. To be rightly guided, one must be personally guided by Śrī Caitanya Mahāprabhu. This was the case with Śrīla Rūpa Gosvāmī, Sanātana Gosvāmī and other ācāryas.