CC Madhya 11.79

tabe govinda daṇḍavat kaila ācāryere
tāṅre nāhi cine ācārya, puchila dāmodare
Word for word: 
tabe — at that time; govinda — Govinda; daṇḍavat — falling flat to offer obeisances; kaila — did; ācāryere — unto Advaita Ācārya; tāṅre — him; nāhi — not; cine — recognized; ācārya — Advaita Ācārya; puchila — inquired; dāmodare — to Svarūpa Dāmodara.
Translation: 
When Govinda offered his obeisances by falling down flat before Advaita Ācārya, Advaita Ācārya asked Svarūpa Dāmodara about his identity, for He did not know Govinda at that time.