I was serving wine to the people in the house of AbuTalhah when it was prohibited and that day our wine was made from unripe dates. A man entered upon us and said: The wine has been prohibited, and the herald of the Messenger of Allah (ﷺ) made an announcement. We then said: This is the herald of the Messenger of Allah (ﷺ)
Sunan Abi Dawud Book 27, Hadith 5