Sahih Bukhari Volume 003, Book 043, Hadith Number 644.
Narated By Anas : I was the butler of the people in the house of Abu Talha, and in those days drinks were prepared from dates. Allah's Apostle ordered somebody to announce that alcoholic drinks had been prohibited. Abu Talha ordered me to go out and spill the wine. I went out and spilled it, and it flowed in the streets of Medina. Some people said, "Some people were killed and wine was still in their stomachs." On that the Divine revelation came: "On those who believe And do good deeds There is no blame For what they ate (in the past)." (5.93)