Musannaf Ibn Abi Shaybah

Hazrat Ali (may Allah be pleased with him) bin Abi Talib narrates that the Messenger of Allah (peace and blessings be upon him) said: "I have been granted such virtues that were not granted to any prophet before me." We asked, "O Messenger of Allah! What are they?" He said: "I was helped through awe, and the keys of the earth were given to me, and my name was kept Ahmad, and the earth was made a purifier for me, and my Ummah was made the best of all communities."