CC Madhya 12.137

cāri-dike bhakta-gaṇa karena kīrtana
madhye nṛtya karena prabhu matta-siṁha-sama
Word for word: 
cāri-dike — all around; bhakta-gaṇa — devotees; karena — performed; kīrtana — congregational chanting; madhye — in the middle; nṛtya — dancing; karena — does; prabhu — Śrī Caitanya Mahāprabhu; matta-siṁha-sama — just like a maddened lion.
Translation: 
All around Śrī Caitanya Mahāprabhu all the devotees performed congregational chanting. The Lord, just like a maddened lion, danced in the middle.