▁Egypt ▁( 7 9 0 - 7 9 1 ), ▁after ▁which ▁he ▁was ▁appointed ▁to ▁the ▁eastern ▁province ▁of ▁al - S ind ▁( 8 0 0 ), ▁where ▁he ▁served ▁for ▁the ▁remainder ▁of ▁his ▁life . ▁ ▁Career ▁Daw ud ▁was ▁the ▁son ▁of ▁Y az id ▁ibn ▁Hat im , ▁who ▁served ▁as ▁the ▁governor ▁of ▁If ri q iy ah ▁for ▁the ▁cal i ph s ▁al - M ans ur , ▁al - M ah di , ▁al - H adi , ▁and ▁al - R ash id . ▁Y az id ▁died ▁early ▁in ▁the ▁reign ▁of ▁al - R ash id , ▁at ▁which ▁point ▁Daw ud ▁tempor arily ▁succeeded ▁him ▁as ▁governor . ▁His ▁leadership , ▁however , ▁proved ▁to ▁be ▁in ade qu ate , ▁and ▁the ▁government ' s ▁authority ▁within ▁the ▁province ▁began ▁to ▁weak en . ▁As ▁a ▁result , ▁al - R ash id ▁appointed ▁Daw ud ' s ▁uncle ▁Ra wh ▁ibn ▁Hat im ▁to ▁take ▁control ▁of ▁If ri q iy ah ▁instead . ▁Following ▁this , ▁Daw ud ▁was ▁appointed ▁over ▁Egypt ▁in ▁ 7 9 0 . ▁After ▁serving ▁as ▁governor ▁there ▁for ▁slightly ▁more ▁than ▁a ▁year , ▁he ▁was ▁dismiss ed ▁from ▁that ▁post ▁as ▁well ▁and ▁replaced ▁with ▁the ▁Abb as id ▁prince ▁Mus a ▁ibn ▁' Is a . ▁ ▁In ▁ 8 0 0 ▁Daw ud ▁was ▁inv ested ▁with ▁the ▁governor ship ▁of ▁al - S ind ▁and ▁task