Musnad Ahmad 33:601

Musa narrated to us, Ibn Lahi'ah narrated to us, from Abu al-Zubayr, from Jabir, that he said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, saying: "Before the Hour, there will be liars. Among them is the master of al-Yamamah, and among them is the master of San'a, 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." Jabir said: And some of my companions say: "Close to thirty liars."