▁U mar . ▁During ▁a ▁visit ▁of ▁the ▁Dutch ▁Res ident ' s ▁visit ▁to ▁Pen y eng at , ▁the ▁s ultan ▁then , ▁on ▁his ▁own ▁authority ▁and ▁without ▁Dutch ▁appro val , ▁sum mon ed ▁the ▁r ul ers ▁of ▁R ete h , ▁Ga ung ▁and ▁Mand ah , ▁making ▁the ▁Res ident ▁feel ▁as ▁if ▁he ▁was ▁being ▁bes ie ged ▁by ▁the ▁s ultan ate . ▁The ▁affili ates ▁of ▁the ▁Ro es id ij ah ▁Kl ub , ▁mainly ▁the ▁members ▁of ▁the ▁administrative ▁class , ▁were ▁thus ▁able ▁to ▁slowly ▁man e uv re ▁Abd ul ▁Rah man , ▁once ▁a ▁supp orter ▁of ▁Dutch ▁rule , ▁to ▁act ▁against ▁the ▁colonial ▁power ' s ▁wishes . ▁ ▁The ▁bold ▁resolution ▁shown ▁by ▁the ▁s ultan ▁and ▁fellow ▁officials ▁was ▁not ▁wel com ed ▁by ▁the ▁Dutch . ▁According ▁to ▁the ▁journal ▁kept ▁by ▁the ▁Sy ah band ar ▁( Har bour master ), ▁the ▁decision ▁of ▁the ▁s ultan ▁was ▁de pl ored ▁by ▁the ▁Dutch ▁Res ident , ▁G . F ▁Bru ijn ▁K ops ▁who ▁stated ▁" they ▁m old ed ▁the ▁s ultan ▁to ▁ret ali ate ▁( ag ain st ▁the ▁Dutch ), ▁so ▁a ▁ret ali ation ▁( by ▁the ▁Dutch ) ▁shall ▁be ▁admin ister ed ". ▁ ▁On ▁the ▁morning ▁of ▁ 1 1 ▁February ▁ 1 9 1 1 , ▁when ▁the ▁s ultan ▁and ▁the ▁court ▁officials ▁were ▁in ▁Da ik ▁to ▁perform ▁the ▁Mand