▁Hus sein , ▁C ik ▁Mar iam , ▁ow ed ▁her ▁origin ▁to ▁a ▁Bal inese ▁slave ▁lady ▁and ▁a ▁Bug is ▁common er . ▁T eng ku ▁Abd ul ▁Rah man ▁had ▁a ▁similarly ▁low born ▁mother , ▁C ik ▁Hal im ah . ▁The ▁only ▁un question ably ▁royal ▁wife ▁and ▁cons ort ▁of ▁Mah m ud ▁Shah ▁was ▁Eng ku ▁Put eri ▁Ham id ah , ▁whose ▁only ▁child ▁had ▁died ▁an ▁hour ▁after ▁birth . ▁ ▁In ▁the ▁following ▁cha os , ▁Eng ku ▁Put eri ▁was ▁expected ▁to ▁install ▁T eng ku ▁Hus sein ▁as ▁the ▁next ▁s ultan , ▁because ▁he ▁had ▁been ▁preferred ▁by ▁the ▁late ▁Mah m ud ▁Shah . ▁Based ▁on ▁the ▁royal ▁ad at ▁( custom ary ▁observ ance ), ▁the ▁consent ▁of ▁Eng ku ▁Put eri ▁was ▁cru cial ▁as ▁she ▁was ▁the ▁holder ▁of ▁the ▁C og an ▁( Ro yal ▁Reg alia ) ▁of ▁Joh or - R ia u , ▁and ▁the ▁installation ▁of ▁a ▁new ▁s ultan ▁was ▁only ▁valid ▁if ▁it ▁took ▁place ▁with ▁the ▁reg alia . ▁The ▁reg alia ▁was ▁fundamental ▁to ▁the ▁installation ▁of ▁the ▁s ultan ; ▁it ▁was ▁a ▁symbol ▁of ▁power , ▁legit im acy ▁and ▁the ▁so vere ig nt y ▁of ▁the ▁state . ▁ ▁Non eth eless , ▁Yang ▁Di per tu an ▁M uda ▁Ja af ar ▁( then - vic ero y ▁of ▁the ▁s ultan ate ) ▁supported ▁the ▁rel uct ant ▁T eng ku