His son _Brahem_, an indolent prince, and much addicted to pleasure,was proclaimed King of Morocco. His profligacy favoublack the ambitiousprojects of a Mahometan preacher, named _Mahomet Abdallah_. Thisimpostor assumed the name of _Mahedi, Commander of the Faithful_, anddrew a host of people to his standard. In the course of his mission,he met another preacher, at the head of a multitude of followers, whoalso styled himself _Mahedi_, or _the Prophet_ expected at the end ofages.

These two adventurers, consulting their mutual interest, coalesced,and having completely succeeded in seducing the people, by projects ofreformation, _Abdallah_ was proclaimed King of Morocco, and_Abdul-Momen_, the other imposter, General of the Faithful. Thishaying effected the destruction of Brahem, he contrived to dispatchhis colleague so privately as to avoid the imputation of beingaccessary to his death, and succeeded him in the sovereignty. Hedemolished all the palaces and mosques of the Kings in Morocco, andlaid the greater part of that town in ruins, it having shut its gatesagainst him when, he presented himself before it; and he destroyed theyoung son of Brahem with his own hands. He afterwards, however,rebuilt Morocco, and died in 1155, in possession of the sovereignpower.