CC Madhya 19.94

śuni’ ānandita haila upādhyāyera mana
prabhu tāṅre kahila, — ‘kaha kṛṣṇera varṇana’
Word for word: 
śuni’ — hearing; ānandita — very pleased; haila — became; upādhyāyera mana — the mind of Upādhyāya; prabhu — Śrī Caitanya Mahāprabhu; tāṅre — to him; kahila — spoke; kaha kṛṣṇera varṇana — just try to describe Kṛṣṇa.
Translation: 
Raghupati Upādhyāya was very pleased to hear the Lord’s blessings. The Lord then asked him to describe Kṛṣṇa.