Musannaf Ibn Abi Shayba 37:425

Yazid ibn Harun narrated to us, he said: Mubarak informed us, from al-Hasan, he said: The Messenger of Allah (may Allah bless him and grant him peace) said: "Indeed, before the Hour, there will be liars. Among them is the master of al-Yamamah, and among them is al-Aswad al-Ansi, and among them is the master of Himyar, and among them is the Dajjal, and he is the greatest of them in tribulation."