▁by ▁Nur ▁ad - D in ▁Z ang i , ▁r uler ▁of ▁Ale ppo ▁and ▁the ▁son ▁of ▁Z eng i , ▁threatened ▁the ▁bes ie ging ▁Cr us aders , ▁forcing ▁them ▁to ▁withdraw . ▁After ▁un success ful ▁attacks ▁in ▁ 1 1 5 0 ▁and ▁ 1 1 5 1 , ▁Nur ▁ad - D in ▁finally ▁captured ▁Dam asc us ▁in ▁ 1 1 5 4 . ▁The ▁cit adel ▁was ▁only ▁surrender ed ▁to ▁Nur ▁ad - D in ▁after ▁M uj ir ▁ad - D in ▁Ab a q , ▁the ▁last ▁Bur id ▁r uler , ▁had ▁been ▁given ▁safe ▁passage ▁and ▁lord ship ▁over ▁the ▁city ▁of ▁H oms . ▁ ▁Nur ▁ad - D in ▁ruled ▁as ▁Z eng id ▁em ir ▁of ▁Dam asc us ▁from ▁ 1 1 5 4 ▁until ▁his ▁death ▁in ▁ 1 1 7 4 . ▁He ▁took ▁up ▁residence ▁in ▁the ▁cit adel ▁and ▁re built ▁or ▁ref urb ished ▁its ▁resident ial ▁structures . ▁After ▁an ▁earth qu ake ▁hit ▁Dam asc us ▁in ▁ 1 1 7 0 , ▁Nur ▁ad - D in ▁built ▁a ▁wooden ▁house ▁for ▁sleep ing ▁and ▁prayer ▁next ▁to ▁the ▁original ▁stone ▁residence ▁of ▁the ▁cit adel . ▁In ▁addition , ▁he ▁built ▁a ▁mos que ▁and ▁a ▁f ount ain ▁in ▁the ▁cit adel . ▁Between ▁ 1 1 6 5 ▁and ▁ 1 1 7 4 , ▁Nur ▁ad - D in ▁re - fort ified