ßÊÇÈ : Hadeeth No:1757 : Abu Huraira: Allah's Apostle said, "I was ordered to migrate to a town which will swallow (conquer) other towns and is called Yathrib and that is Medina, and it turns out (bad) persons as a furnace removes the impurities of iron....

ßÊÇÈ ÇáÝÊä : Hadeeth No:6614 : 'Abdullah: The Prophet said, "Near the establishment of the Hour, there will be the days of Al-Harj, and the religious knowledge will be taken away (vanish i.e. by the death of Religious scholars) and general ignorance will spread." Abu Musa said, "Al-Harj, in the Ethiopian language, ...