Musnad Abu Ya'la al-Mawsili 109:185

Al-Azraq ibn Ali narrated to us, Hassan narrated to us, Muhammad ibn al-Fadl narrated to us, from Amr ibn Dinar, from Jabir ibn Abdullah, who said: I heard the Prophet, peace and blessings of Allah be upon him, saying: "Indeed, people will increase, and my companions will decrease. So do not revile them; may Allah curse whoever reviles them."