urg an ) ▁as ▁well . ▁Mak an ▁had ▁established ▁family ▁t ies ▁through ▁marriage ▁with ▁the ▁Al ids , ▁as ▁Ja ' far , ▁the ▁son ▁of ▁im am ▁Has an ▁ibn ▁Ali ▁al - U tr ush ▁( r . ▁ 9 1 4 – 9 1 7 ), ▁was ▁his ▁son - in - law . ▁The ▁latter ▁was ▁engaged ▁in ▁a ▁complex ▁struggle ▁against ▁al - U tr ush ' s ▁designated ▁successor ▁Ab u ▁Muhammad ▁Has an ▁ibn ▁Q as im ▁( r . ▁ 9 1 7 – 9 2 8 ), ▁known ▁as ▁the ▁Da ' i ▁il a ' l - Ha qq ▁(" M ission ary ▁of ▁the ▁True ▁Fa ith "), ▁and ▁it ▁was ▁not ▁until ▁ 9 2 3 ▁that ▁Ja ' far ▁and ▁his ▁brother ▁A hm ad ▁succeeded ▁in ▁ou st ing ▁the ▁Da ' i ▁and ▁forcing ▁him ▁to ▁ex ile . ▁Mak an ▁was ▁then ▁appointed ▁governor ▁of ▁G urg an , ▁the ▁eastern most ▁province ▁of ▁the ▁Al id ▁em ir ate . ▁When ▁Ja ' far ▁died ▁in ▁ 9 2 4 , ▁he ▁left ▁the ▁throne ▁to ▁A hm ad ' s ▁son ▁Ab u ▁Ali ▁Muhammad , ▁but ▁Mak an ▁de posed ▁Muhammad ▁and ▁installed ▁his ▁own ▁grand - ne p hew ▁Is mail , ▁a ▁son ▁of ▁Ja ' far , ▁in ▁his ▁place . ▁Muhammad , ▁however , ▁managed ▁to ▁escape ▁from ▁his ▁capt ors ▁and ▁with ▁the ▁aid ▁of ▁the ▁Day