Sheikh Tusi's Ghaybat: "Then there will be the rise of Hazrat Mahdi (as)... THROUGH HIM, ALLAH WILL ELIMINATE ALL THE LIES. THROUGH HIM [HAZRAT MAHDI (AS)] HE WILL ELIMINATE VIOLENCE. He [Hazrat Mahdi (as)] will lift the shame of of slavery from your necks."
(Kitab al Ghaybat, [Bihar al-Anwar, Vol. 51], Ansariyan Publications, Collected by: Muhammad Baqr al-Majlis, Iran-Qum, 2003, p. 132)