Musnad Abu Ya'la al-Mawsili 115:221

Zuhayr narrated to us, al-Hasan ibn Musa narrated to us, Shayban narrated to us, from Qatadah, from Anas, who said: "Shall I not narrate to you a hadith that no one will narrate after me, which he heard from the Prophet of Allah, may Allah bless him and grant him peace? I heard the Messenger of Allah, may Allah bless him and grant him peace, saying: 'Indeed, among the signs of the Hour is that knowledge will be lifted, ignorance will appear, wine will be drunk, adultery will spread, men will decrease, and women will increase, until there is one guardian for fifty women.'"