Musnad Abu Ya'la al-Mawsili 3:189

Abu Kurayb Muhammad ibn al-Ala narrated to us, Muhammad ibn al-Hasan al-Asadi narrated to us, Harun ibn Salih al-Hamdani narrated to us, from al-Harith ibn Abd al-Rahman, from Abu al-Jallas, who said: I heard Ali saying to Abdullah al-Saba’i: "Woe to you! By Allah, he [the Prophet] did not confide in me anything that he concealed from any of the people. I indeed heard him say: 'Between the hands of the Hour are thirty liars,' and you are one of them."