▁Bak r ▁was ▁viewed ▁as ▁acceptable ▁by ▁the ▁Ans ar ▁and ▁the ▁Q ur ay sh ite ▁el ite ▁and ▁was ▁acknowled ged ▁as ▁cal i ph ▁( le ader ▁of ▁the ▁Muslim ▁community ). ▁He ▁showed ▁favor ▁to ▁the ▁Um ay y ads ▁by ▁award ing ▁them ▁command ▁roles ▁in ▁the ▁Muslim ▁con quest ▁of ▁Sy ria . ▁One ▁of ▁the ▁app o inte es ▁was ▁Y az id , ▁the ▁son ▁of ▁Ab u ▁S uf yan , ▁who ▁owned ▁property ▁and ▁maintained ▁trade ▁networks ▁in ▁Sy ria . ▁ ▁Ab u ▁Bak r ' s ▁successor ▁U mar ▁() ▁cur ta iled ▁the ▁influence ▁of ▁the ▁Q ur ay sh ite ▁el ite ▁in ▁favor ▁of ▁Muhammad ' s ▁earlier ▁supp or ters ▁in ▁the ▁administration ▁and ▁military , ▁but ▁non eth eless ▁allowed ▁the ▁growing ▁fo oth old ▁of ▁Ab u ▁S uf yan ' s ▁sons ▁in ▁Sy ria , ▁which ▁was ▁all ▁but ▁conquer ed ▁by ▁ 6 3 8 . ▁When ▁U mar ' s ▁overall ▁commander ▁of ▁the ▁province ▁Ab u ▁U bay da ▁ibn ▁al - J ar rah ▁died ▁in ▁ 6 3 9 , ▁he ▁appointed ▁Y az id ▁governor ▁of ▁Sy ria ' s ▁Dam asc us , ▁Palest ine ▁and ▁Jordan ▁districts . ▁Y az id ▁died ▁shortly ▁after ▁and ▁U mar ▁appointed ▁his ▁brother ▁Mu ' aw i ya ▁in ▁his ▁place . ▁U mar ' s ▁exception al ▁treatment ▁of ▁Ab u ▁S uf yan ' s ▁sons