<P> 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 ) before the Day of Judgement ( yawm al - qiyamah , literally , the Day of Resurrection ) and will rid the world of evil . </P>
who is al mahdi and what will he accomplish
the prophesied redeemer of Islam will rid the world of evil