CC Antya 16.67

‘kṛṣṇa kaha’ bali’ prabhu balena bāra bāra
tabu kṛṣṇa-nāma bālaka nā kare uccāra
Synonyms: 
kṛṣṇa kaha — say Kṛṣṇa; bali’ — saying; prabhu — Śrī Caitanya Mahāprabhu; balena — said; bāra bāra — again and again; tabu — still; kṛṣṇa-nāma — the holy name of Kṛṣṇa; bālaka — the boy; kare uccāra — did not utter.
Translation: 
Again and again Śrī Caitanya Mahāprabhu asked the boy to chant the name of Kṛṣṇa, but the boy would not utter the holy name.