Musnad Ahmad 9:13

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, and Hajjaj narrated to me, Shu'bah narrated to me, from al-Hurr ibn Sayyah, from 'Abd al-Rahman ibn al-Akhnas, that al-Mughirah ibn Shu'bah gave a sermon and disparaged 'Ali, may Allah be pleased with him. He said: Sa'id ibn Zayd stood up and said: I bear witness that I heard the Messenger of Allah, peace and blessings of Allah be upon him, say: "The Messenger of Allah is in Paradise, Abu Bakr is in Paradise, 'Umar is in Paradise, 'Ali is in Paradise, 'Uthman is in Paradise, 'Abd al-Rahman is in Paradise, Talhah is in Paradise, al-Zubayr is in Paradise, and Sa'd is in Paradise." Then he said: If you wish, I will inform you of the tenth. Then he mentioned himself.