Musnad Ahmad 907:88

Muhammad ibn Ja’far narrated to us, Shu’bah narrated to us, and Hajjaj said: Shu’bah informed us, from Simak ibn Harb, from Jabir ibn Samurah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) prayed over Ibn al-Dahdah. Hajjaj said: Abu al-Dahdah. Then a horse without a saddle was brought, and a man hobbled it, so he (the Prophet) mounted it. It began to trot with him, and we were following it, running behind him. He said: A man from the people said: The Prophet (peace and blessings of Allah be upon him) said: "How many a cluster of dates, hanging or suspended, is there in Paradise for Ibn al-Dahdah." Hajjaj said in his narration: A man with us in the gathering of Jabir ibn Samurah said: He said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "How many a cluster of dates is suspended for Abu al-Dahdah in Paradise."