It was narrated to me by Abu al-Tahir Ahmad ibn 'Amr ibn Sarh: 'Abdullah ibn Wahb informed us: 'Amr ibn al-Harith informed me that Qatadah ibn Di'amah narrated to him that he heard Anas ibn Malik say: The Messenger of Allah, peace and blessings be upon him, forbade mixing ripe dates and unripe dates and then drinking it. And indeed, that was the general nature of their intoxicating drinks on the day wine was prohibited.