Musnad Ahmad 27:383

Mu'adh ibn Mu'adh narrated to us, Muhammad ibn 'Amr narrated to us, from Abu Salamah ibn 'Abd al-Rahman, from 'Abdullah ibn 'Umar, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Every intoxicant is khamr (wine/intoxicant), and every intoxicant is haram (forbidden)."