CC Madhya 25.81

prakāśānanda kahe, — “tumi sākṣāt bhagavān
tabu yadi kara tāṅra ‘dāsa’-abhimāna
Word for word: 
prakāśānanda kahe — Prakāśānanda Sarasvatī replied; tumi — You; sākṣāt — directly; bhagavān — the Supreme Personality of Godhead, Kṛṣṇa; tabu — yet; yadi — if; kara — You pose; tāṅra dāsa-abhimāna — considering Yourself His servant.
Translation: 
Prakāśānanda replied, “You are the Supreme Personality of Godhead, Kṛṣṇa Himself. Nonetheless, You are considering Yourself His eternal servant.