CC Madhya 16.236

sarvajña gaurāṅga-prabhu jāni’ tāṅra mana
śikṣā-rūpe kahe tāṅre āśvāsa-vacana
Word for word: 
sarva-jña — omniscient; gaurāṅga-prabhu — Śrī Caitanya Mahāprabhu; jāni’ — knowing; tāṅra — his; mana — mind; śikṣā-rūpe — as an instruction; kahe — says; tāṅre — unto Raghunātha dāsa; āśvāsa-vacana — words of assurance.
Translation: 
Since Śrī Caitanya Mahāprabhu was omniscient, He could understand Raghunātha dāsa’s mind. The Lord therefore instructed him with the following reassuring words.