who is al mahdi and what will he accomplish
Mahdi In Islamic eschatology, the Mahdi (Arabic: مهدي‎‎, ISO 233: mahdī "guided one") is the prophesied redeemer of Islam who will rule for five, seven, nine, or nineteen years (according to differing interpretations)[1][2] before the Day of Judgement (yawm al-qiyamah, literally, the Day of Resurrection)[3] and will rid the world of evil.[4]