Musnad Ahmad

It is narrated from Hazrat Abu Saeed Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: I give you the glad tidings of Mahdi, who will not appear among my Ummah until differences and earthquakes become widespread. He will fill the earth with justice and fairness just as it was previously filled with oppression and tyranny. The inhabitants of the heavens will be pleased with him, and so will the inhabitants of the earth. In his time, Allah will fill the hearts of the Ummah of Muhammad with wealth, and no one will be in need of another. He will even command a caller, who will announce: Whoever is in need of wealth, let him come to us. Only one man will come to him and say: I am in need. He will say to him: Go to the treasurer and tell him that Mahdi commands you to give me wealth. The treasurer, according to the command, will say: Take with your own hands as much as you can. When he gathers it in a cloth and ties it up, he will feel ashamed and say to himself: I am the greediest among the Ummah of Muhammad; was there not enough for me as there was for others? (Thinking this, he will return all the wealth, but it will not be taken back from him, and he will be told: We do not take back what we have given.) This situation will remain for seven, or eight, or nine years. After that, there will be no benefit in life.