 Isa was reinstalled by 1280, and in the following year, played a decisive role as a commander in the Mamluk victory over the Ilkhanate at the Second Battle of Homs.After his death, Isa was succeeded by his son Muhanna, and throughout the 14th century, Isa's direct descendants held the office of "amir al-ʿarab" with occasional interruption.Isa's clan, the Al Fadl, were direct descendants of the Jarrahid ruler of Palestine, Mufarrij ibn Daghfal (d. 1013), himself a member of the ancient tribe of Tayy; Isa's "laqab" was "Sharaf ad-Din al-Tayyi", denoting his Tayyid roots.