It is narrated from Hazrat Ma'qil that the Prophet (peace be upon him) said: "After a short time following me, oppression will begin to appear. As oppression appears, justice will disappear to the same extent, until a time comes when every child born in oppression will know nothing else. Then Allah will bring back justice, and as justice returns, oppression will disappear to the same extent, until a time comes when every child born in justice will know nothing else."