The Holy Prophet (s.a.w.s.) informed – Mahdi is from my progeny. His face resembles a dazzling star, his complexion is like that of an Arab, while his physique resembles an Israeli. He shall fill the earth with justice and equity as it would have been ravished with tyranny. His reign will delight the inmates of the heavens and the earth. The birds in the sky will be ecstatic with his regime. He will rule for a period of twenty years.
Al-Sawaaeq al-Muhreqah p 98 Al-Bayaan fi Akhbaare Saaheb al-Zamaan chap 8 p 118 Mizaan al-Etedaal v 3 p 449