Musnad Ahmad 30:2171

'Affan narrated to us, he said: Aban al-'Attar narrated to us, he said: Yahya ibn Abi Kathir narrated to us, he said: Abu Kathir al-Ghubari narrated to us, from Abu Hurairah, that the Prophet of Allah, may Allah bless him and grant him peace, used to say: "Intoxicant (al-khamr) is from these two trees: from the date palm and the grapevine."