Musnad Abu Ya'la al-Mawsili 246:5

Abu Khaythama and Ishaq ibn Ibrahim both narrated to us, they said: Ibn 'Uyaynah narrated to us, from al-Zuhri, who heard Muhammad ibn Jubayr ibn Mut'im, from his father, that the Prophet (peace and blessings of Allah be upon him) said: "I am Muhammad, and I am Ahmad, and I am al-Mahi (the Effacer) by whom disbelief is effaced. And I am al-Hashir (the Gatherer) whom the people are gathered at my heels. And I am al-'Aqib (the Successor) after whom there is no prophet."