Musnad Ahmad 32:585

'Abd al-Samad narrated to us, my father narrated to me, Abu al-Tayyah narrated to us, Anas ibn Malik narrated to us, he said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Among the signs of the Hour are that knowledge will be lifted, ignorance will be established, intoxicants will be drunk, and adultery will appear."