CC Madhya 18.206

‘kṛṣṇa’ kaha, ‘kṛṣṇa’ kaha, — kailā upadeśa
sabe ‘kṛṣṇa’ kahe, sabāra haila premāveśa
Word for word: 
kṛṣṇa kaha — just chant “Kṛṣṇa”; kṛṣṇa kaha — just chant “Kṛṣṇa”; kailā upadeśa — Śrī Caitanya Mahāprabhu instructed; sabe — all; kṛṣṇa kahe — chant the holy name of Kṛṣṇa; sabāra — of all of them; haila — there was; prema-āveśa — ecstatic love.
Translation: 
Śrī Caitanya Mahāprabhu then told all the Muslims there, “Chant the holy name of Kṛṣṇa! Chant the holy name of Kṛṣṇa!” As they all began to chant, they were overwhelmed by ecstatic love.