Musnad Ahmad 27:1198

Hashim ibn al-Qasim narrated to us, Abu Ma'shar narrated to us, from Musa ibn 'Uqbah, from Salim ibn 'Abdullah, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Every intoxicant is forbidden. Whatever causes intoxication in large amounts, a small amount of it is forbidden."