▁after ▁having ▁sub du ed ▁Ale ppo , ▁H oms , ▁and ▁Ba al bek . ▁A ▁M aml uk ▁army ▁from ▁Egypt ▁under ▁Sultan ▁Far aj ▁ibn ▁Bar qu q , ▁the ▁son ▁of ▁Bar qu q , ▁failed ▁to ▁lift ▁the ▁sie ge . ▁In ▁ 1 4 0 1 , ▁the ▁city ▁surrender ed ▁to ▁Tim ur , ▁except ▁for ▁the ▁cit adel , ▁which ▁Tim ur ▁bes ie ged . ▁Tow ers ▁with ▁tre buch ets ▁were ▁set ▁up ▁around ▁the ▁cit adel ▁and ▁in ▁the ▁Um ay y ad ▁Mos que . ▁The ▁g arrison ▁surrender ed ▁after ▁the ▁north western ▁tower ▁was ▁brought ▁down ▁through ▁min ing . ▁The ▁def enders ▁were ▁sla ugh tered ▁and ▁a ▁heavy ▁t ribute ▁was ▁im posed ▁on ▁the ▁citizens ▁of ▁Dam asc us . ▁When ▁they ▁failed ▁to ▁deliver , ▁the ▁city ▁was ▁s ack ed ▁and ▁the ▁Um ay y ad ▁Mos que ▁was ▁burn ed . ▁ ▁The ▁damage ▁to ▁the ▁cit adel , ▁especially ▁to ▁its ▁northern ▁and ▁western ▁walls , ▁was ▁only ▁rep a ired ▁in ▁ 1 4 0 7 . ▁In ▁ 1 4 1 4 , ▁governor ▁of ▁Dam asc us ▁N aw ru z ▁al - H af izi , ▁sought ▁refuge ▁in ▁the ▁cit adel ▁against ▁the ▁army ▁of ▁Sultan ▁Al - M u ' ay y ad ▁Sh ay kh . ▁The ▁cit adel ▁was ▁bomb arded ▁by ▁tre buch et ▁and ▁can non . ▁The ▁sie ge ▁ended ▁when