The Holy Prophet (s.a.w.a.) prophesied – Mahdi’s conduct shall resemble mine. Even his visage and appearance shall bear an unmistakable resemblance to mine. He shall fill the earth with justice and amity just as it was filled with despotism and oppression.
Tarikh al-Baghdad v 9 p 471 trad 1,501 Iqd al-Durar fi Akhbaar-e-Muntazar wa howa al-Mahdi (a.s) chap 9 part 3 p 218