▁Category : S ongs ▁written ▁by ▁An nie ▁Rob off ▁Category : S ong ▁record ings ▁produced ▁by ▁Em ory ▁G ord y ▁Jr . ▁Category : E pic ▁Records ▁singles ▁Category : 1 9 9 7 ▁songs ▁Category : S ongs ▁written ▁by ▁Ar nie ▁Roman <0x0A> </s> ▁Muslim ▁con quest ▁of ▁K hor as an ▁was ▁the ▁last ▁phase ▁of ▁the ▁heavy ▁war ▁between ▁the ▁R ash id un ▁cal i ph ate ▁against ▁S ass an id ▁Empire . ▁ ▁Background ▁ ▁In ▁ 6 4 2 ▁the ▁S ass an id ▁Empire ▁was ▁nearly ▁destroyed ▁and ▁almost ▁all ▁parts ▁of ▁Pers ia ▁were ▁conquer ed , ▁except ▁parts ▁of ▁K hor as an , ▁which ▁were ▁still ▁held ▁by ▁S ass an ids . ▁K hor as an ▁was ▁the ▁second ▁largest ▁province ▁of ▁the ▁S ass an id ▁Empire . ▁It ▁stretch ed ▁from ▁what ▁is ▁now ▁north - e astern ▁Iran , ▁Afghan istan ▁and ▁Turk men istan . ▁Its ▁capital ▁was ▁B alk h , ▁in ▁present - day ▁northern ▁Afghan istan . ▁In ▁ 6 5 1 ▁after ▁Y az de ger d ▁III ▁was ▁murder ed ▁by ▁Mah uy ▁S uri , ▁the ▁mar z ban ▁or ▁administrator ▁of ▁Mar w ▁Tab ar istan ▁was ▁afterwards ▁inv aded ▁by ▁the ▁Muslim ▁Arab s . ▁ ▁During ▁R ash id un ▁and ▁Um ay y ad ▁era ▁ ▁Begin ning ▁of ▁con quest ▁ ▁the ▁mission ▁of ▁conqu ering ▁Kh uras an ▁was ▁assigned ▁to