Musnad Abu Ya'la al-Mawsili 143:7

Muhammad ibn Mansur al-Tusi narrated to us, Rawh narrated to us, Sa'id ibn Ubayd Allah al-Jubayri narrated to us, he said: I heard Bakr ibn Abd Allah al-Muzani from Anas ibn Malik, he said: The prohibition of wine was revealed, so I entered upon some people of my companions while it was before them. I struck it with my foot, then I said: "Go to the Messenger of Allah, may Allah bless him and grant him peace, for the prohibition of wine has been revealed." He said: And their drink on that day was *busr* (unripe dates) and *tamr* (ripe dates).