 Fayyad died shortly after his appointment and replaced by his brother Hayar . For the next thirty years , Hayar rebelled and reconciled with the Mamluks and during times of rebellion he was often replaced by his brother Zamil and cousin Mu <unk> ibn Fadl ; sometimes the latter two ruled jointly . In 1380 , Hayar 's son Nu 'ayr was appointed amir al @-@ ʿarab . He was dismissed several times for revolting against the sultan 's authority by supporting rebel governors in Syria . His last reign ended with his execution in 1406 . Nu 'ayr 's son Ijl had sided against his father and backed Sultan an @-@ Nasir Faraj , who appointed him in place of Nu 'ayr . After Ijl was killed by a Mamluk rebel in 1412 , the power of the Al Fadl largely diminished . Nonetheless , members of the clan from Hayar 's line continued to fill the post of amir al @-@ ʿarab , with Husayn ibn Nu 'ayr succeeding Fadl . However , from then on , mentions of the imarat al @-@ ʿarab " in the histories are scanty and confused " , according to historian Tritton . In 1427 , Nu 'ayr 's grandson , <unk> ibn Ali was killed by his cousin Qirqmas and succeeded by his brother Mudlij ibn Ali , who was killed by Qirqmas in 1429 . Qirqmas died in 1436 , though it is not clear if he had been appointed amir al @-@ ʿarab . A grandson of Nu 'ayr , Sayf ibn Ali , killed the amir al @-@ ʿarab and his cousin , Sulayman ibn Assaf , in 1480 , but was himself killed by Amir ibn Ijl the following year in revenge . Sayf 's son was recorded as the amir al @-@ ʿarab in 1496 . 
