: ▁An ▁Encyclopedia ▁of ▁the ▁Pro ph et ▁of ▁God ▁( 2 ▁vol s .), ▁Ed ited ▁by ▁C . ▁Fitz pat rick ▁and ▁A . ▁Walker , ▁Santa ▁Barbara , ▁ABC - CLI O , ▁ 2 0 1 4 . ▁ ▁P . ▁Cr one , ▁S la ves ▁on ▁horses ▁( C amb ridge , ▁ 1 9 8 0 ). ▁P . ▁Cr one ▁and ▁M . A . ▁Cook , ▁H agar ism ▁( C amb ridge , ▁ 1 9 7 7 ). ▁ ▁Pre v ité - Or ton , ▁C . ▁W ▁( 1 9 7 1 ). ▁The ▁Sh orter ▁Cambridge ▁Med ieval ▁History . ▁Cambridge : ▁Cambridge ▁University ▁Press . ▁ ▁External ▁links ▁▁▁▁▁▁ ▁Category : 6 6 1 ▁establish ments ▁Category : 7 5 0 s ▁dis est ab lish ments ▁Category : 7 th - century ▁establish ments ▁in ▁Africa ▁Category : 8 th - century ▁dis est ab lish ments ▁in ▁Africa ▁Category : 8 th ▁century ▁in ▁Al - And alus ▁Category : History ▁of ▁the ▁Middle ▁East ▁Category : History ▁of ▁the ▁Mediter rane an ▁Category : History ▁of ▁North ▁Africa ▁Category : History ▁of ▁Sa udi ▁Arab ia ▁Category : Med ieval ▁Spain ▁Category : Med ieval ▁Sy ria ▁Category : Med ieval ▁Pers ia ▁Category : St ates ▁in ▁medieval ▁An atol ia ▁Category : St ates ▁and ▁territ ories ▁established ▁in ▁the ▁ 6 6 0 s ▁Category : St ates ▁and ▁territ ories ▁dis