Harun ibn 'Abdullah and Hajjaj ibn al-Sha'ir narrated to me; they said: Hajjaj ibn Muhammad narrated to us; he said: Ibn Jurayj said: Abu al-Zubayr informed me that he heard Jabir ibn 'Abdullah say: I heard the Messenger of Allah, peace and blessings be upon him, say: "I am only a human being, and I have made a condition with my Lord, the Mighty and Majestic, that any Muslim servant whom I revile or insult, that shall be for him a purification and a reward."