CC Madhya 15.33

hanumān-āveśe prabhu vṛkṣa-śākhā lañā
laṅkā-gaḍe caḍi’ phele gaḍa bhāṅgiyā
Word for word: 
hanumān-āveśe — in the emotion of being Hanumān; prabhu — Śrī Caitanya Mahāprabhu; vṛkṣa-śākhā lañā — taking a large branch of a tree; laṅkā-gaḍe — on the Laṅkā fort; caḍi’ — ascending; phele — breaks down; gaḍa — the fort; bhāṅgiyā — dismantling.
Translation: 
Displaying the emotions of Hanumān, Śrī Caitanya Mahāprabhu took up a large tree branch and, mounting the walls of the Laṅkā fort, began to dismantle it.