. ▁In ▁ 9 3 7 ▁Abd ▁al - R ah mad ▁conquer ed ▁some ▁thirty ▁cast les ▁in ▁León . ▁Next ▁he ▁turned ▁to ▁Muhammad ▁ibn ▁Hash im ▁al - T ug ib , ▁governor ▁of ▁Zar ago za , ▁who ▁had ▁al lied ▁with ▁Ram iro ▁but ▁was ▁p ardon ed ▁after ▁the ▁capture ▁of ▁his ▁city . ▁ ▁Despite ▁early ▁defe ats , ▁Ram iro ▁and ▁García ▁were ▁able ▁to ▁cr ush ▁the ▁cal i ph ate ▁army ▁in ▁ 9 3 9 ▁at ▁the ▁Battle ▁of ▁Sim anc as , ▁and ▁almost ▁kill ▁Abd ▁al - R ah man , ▁due ▁to ▁tre ason ▁by ▁Arab ▁elements ▁in ▁the ▁cal i ph ' s ▁army . ▁After ▁this ▁defeat , ▁Abd ▁al - R ah man ▁stopped ▁taking ▁personal ▁command ▁of ▁his ▁military ▁campaign s . ▁His ▁cause ▁was ▁helped , ▁however , ▁by ▁Fern án ▁González ▁of ▁Cast ile , ▁one ▁of ▁the ▁Christian ▁leaders ▁at ▁Sim anc as , ▁who ▁subsequently ▁launched ▁a ▁sust ained ▁re bell ion ▁against ▁Ram iro . ▁The ▁victory ▁of ▁Sim anc as ▁enabled ▁the ▁Christian ▁kingdom ▁to ▁maintain ▁the ▁military ▁initi ative ▁in ▁the ▁pen ins ula ▁until ▁the ▁defeat ▁of ▁Ram iro ' s ▁successor , ▁Or do ño ▁III ▁of ▁León , ▁in ▁ 9 5 6 . ▁However ▁they ▁did ▁not ▁press ▁this ▁advantage ▁as ▁civil ▁war ▁broke ▁out ▁in ▁the ▁Christian ▁territ ories . ▁▁▁ ▁In ▁ 9 5 0 ▁Abd ▁al - R ah man ▁received