Pedzisa mutsara unotevera: Gavhuna weKufa, Ammar ibn Yasir, akagamuchira ruzivo rwekufamba kwePezhiya uye kuunganidzwa paNahavand ndokuzvitaura kuna Umar. Kunyange zvazvo Umar akanga aratidza chido chokuti Mesopotamia ive muganhu wake wokumabvazuva, kuunganidzwa kweuto rePersia paNahavand kwakamumanikidza kuita chiito. Iye zvino akanga ava kutenda kuti chero bedzi Persia chaiyo yakaramba iri pasi pokutonga kwevaSassanid, kudenha Mesopotamia kwaizopfuurira. Hudheifa ibn Al Yaman akagadzwa semutungamiri wemauto eKufa, uye akarayirwa kuti aende kuNahavand. Abu Musa aifanira kufamba achienda kuNahavand kubva kuBusra, nepo Nouman ibn Muqarrin akafamba kubva kuCtesiphon. Umar akafunga kuti iye pachake atore uto rakaunganidzwa kuMedina kuenda kuNahavand kuti atore hutungamiriri hwese. Nhengo dzeMajlis al Shura, zvisinei, dzakataura kuti Umar anofanira kutungamira mushandirapamwe kubva kuMedina, achigadza mutungamiriri wenhandare akangwara weNahavand. Umar akabvuma, achigadza Mugheera ibn Shuba semutungamiri wemauto akaunganidzwa kuMedina, naNouman ibn Muqarrin semutungamiri mukuru kuNahavand. Hondo yavaMuslim yakatanga kuunganidzwa paTazar, uye ipapo yakakunda vaPersia pa
Hondo yeNahavand muna December 642. Nouman akafira muchiito, uye, maererano nemirairo yaOmar, Hudheifa ibn Al Yaman akava mukuru mukuru mutsva. Pashure pacho, vaMuslim vakatora dunhu rose reHamadan, vachisangana nokudzivisa kuduku bedzi.