s ac red ▁king '. ▁He ▁is ▁more ▁powerful ▁than ▁the ▁Z up an ▁( vic ero y ), ▁who ▁is ▁his ▁deput y ▁… ▁His ▁capital ▁is ▁called ▁Dr z v ab ▁where ▁is ▁held ▁a ▁fair ▁of ▁three ▁days ▁every ▁month ." ▁ ▁About ▁a ▁certain ▁king ▁of ▁the ▁C au cas us ▁I bn ▁R ust ah ▁wrote : ▁" He ▁pray ed ▁on ▁Frid ays ▁with ▁the ▁Muslim s , ▁on ▁S atur days ▁with ▁the ▁Jews ▁and ▁on ▁Sund ays ▁with ▁the ▁Christians . ▁' Since ▁each ▁religion ▁claims ▁that ▁it ▁is ▁the ▁only ▁true ▁one ▁and ▁that ▁the ▁others ▁are ▁invalid ', ▁the ▁king ▁explained , ▁' I ▁have ▁decided ▁to ▁h edge ▁my ▁bet s .' " ▁ ▁He ▁also ▁travel led ▁extens ively ▁in ▁Arab ia ▁and ▁is ▁one ▁of ▁the ▁early ▁Pers ian ▁expl or ers ▁to ▁describe ▁the ▁city ▁of ▁S ana ' a . ▁In ▁his ▁Book ▁of ▁P reci ous ▁Records , ▁he ▁writes : ▁" It ▁is ▁the ▁city ▁of ▁Y emen ▁— ▁there ▁not ▁being ▁found ▁in ▁the ▁high land ▁or ▁the ▁T ih ama ▁or ▁the ▁Hij az ▁a ▁city ▁greater , ▁more ▁popul ous ▁or ▁more ▁prosper ous , ▁of ▁more ▁noble ▁origin ▁or ▁more ▁del icious ▁food ▁than ▁it . ▁… ▁San ' a ▁is ▁a ▁popul ous ▁city ▁with ▁fine ▁dwell ings , ▁some ▁above ▁others , ▁but ▁most ▁of ▁them ▁are ▁decor ated ▁with ▁pl aster , ▁burn ed ▁br icks ▁and ▁dressed ▁stones