ba ▁ibn ▁Muslim ▁of ▁Bah ila . ▁The ▁Q ays ▁domin ated ▁the ▁Um ay y ad ▁government ▁during ▁the ▁reign s ▁of ▁Y az id ▁II ▁and ▁Wal id ▁II . ▁As ▁a ▁result , ▁the ▁Y aman ▁revol ted ▁against ▁and ▁killed ▁Wal id ▁II , ▁who ▁was ▁then ▁replaced ▁by ▁Y az id ▁III , ▁who ▁entirely ▁dep ended ▁on ▁the ▁Y aman . ▁The ▁Q ays ▁found ▁a ▁new ▁patron ▁in ▁the ▁Um ay y ad ▁prince ▁Mar wan ▁II , ▁who ▁wr ested ▁the ▁C ali ph ate ▁from ▁Y az id ▁III ▁and ▁re located ▁the ▁Um ay y ad ▁capital ▁from ▁Dam asc us ▁to ▁Har ran ▁in ▁Q ays i ▁territory . ▁The ▁Q ays ▁were ▁Mar wan ' s ▁principal ▁military ▁source ▁in ▁the ▁Battle ▁of ▁the ▁Z ab ▁in ▁ 7 5 0 , ▁in ▁which ▁Mar wan ▁was ▁killed ; ▁shortly ▁after , ▁the ▁Um ay y ad ▁real m ▁entirely ▁fell ▁to ▁the ▁Abb as id ▁C ali ph ate . ▁The ▁Q ays ▁were ▁not ▁able ▁to ▁recover ▁from ▁the ▁huge ▁losses ▁they ▁suffered ▁during ▁the ▁late ▁Um ay y ad ▁period , ▁and ▁their ▁political ▁role , ▁though ▁present , ▁was ▁not ▁of ▁significant ▁consequence ▁during ▁the ▁en su ing ▁Abb as id ▁era . ▁ ▁References ▁ ▁Bibli ography ▁ ▁Category : T rib es ▁of ▁Arab ia ▁Category : T rib es ▁of ▁Sa udi ▁Arab ia ▁ ▁* <0x0A> </s> ▁The ▁P yle ▁House , ▁which