CC Madhya 5.21

choṭa-vipra kahe, “śuna, vipra-mahāśaya
asambhava kaha kene, yei nāhi haya
Word for word: 
choṭa-vipra — the younger brāhmaṇa; kahe — replies; śuna — hear; vipra-mahāśaya — my dear brāhmaṇa; asambhava — unlikely; kaha — you say; kene — why; yei — which; nāhi — not; haya — happens.
Translation: 
The younger brāhmaṇa replied, “My dear sir, please hear me. You are saying something very unusual. Such a thing never happens.