CC Madhya 21.145
kṛṣṇa-kṛpā tomāra upare
mora citta-bhrama kari’, nijaiśvarya-mādhurī,
mora mukhe śunāya tomāre
Śrī Caitanya Mahāprabhu admitted that He was speaking like a madman, which He should not have done for the understanding of those who are externally situated. Statements about Kṛṣṇa’s body, His characteristics and His flute would appear like a madman’s statements to a mundane person. It was actually a fact that Kṛṣṇa wanted to reveal Himself to Sanātana Gosvāmī due to His specific mercy upon him. Somehow or other, Kṛṣṇa explained Himself and His flute to Sanātana Gosvāmī through the mouth of Śrī Caitanya Mahāprabhu, who appeared as though mad. Śrī Caitanya Mahāprabhu admitted that He wanted to tell Sanātana Gosvāmī something else, but somehow or other, in transcendental ecstasy, He spoke of a different subject matter.