▁Sam ark and , ▁Kh ware zem ▁and ▁F arg h ana ▁between ▁ 7 0 5 ▁and ▁ 7 1 5 ▁CE , ▁an nex ing ▁nearly ▁the ▁whole ▁of ▁Trans ox iana ▁north ▁of ▁the ▁Iran ian ▁plate au ▁and ▁border ing ▁the ▁contemporary ▁Tang ▁dynast y ▁of ▁China . ▁The ▁con quest s ▁of ▁Trans ox iana , ▁S ind h ▁and ▁His p ania ▁acc ru ed ▁a ▁massive ▁amount ▁of ▁war ▁spo ils ▁for ▁the ▁C ali ph ate , ▁a kin ▁in ▁value ▁to ▁the ▁total ▁value ▁of ▁the ▁con quest s ▁achieved ▁by ▁the ▁R ash id un ▁cal i ph ▁U mar ▁ibn ▁al - K h att ab . ▁By ▁this ▁point , ▁the ▁C ali ph ate ▁stretch ed ▁from ▁the ▁Atlantic ▁Ocean ▁to ▁the ▁Ind us ▁River . ▁ ▁A ▁major ▁figure ▁during ▁the ▁reign s ▁of ▁both ▁al - W al id ▁and ▁Abd ▁al - Mal ik ▁was ▁the ▁Um ay y ad ▁governor ▁of ▁Ira q , ▁Al - H aj j aj ▁bin ▁You sef . ▁Many ▁Ira q is ▁remained ▁resist ant ▁to ▁Um ay y ad ▁rule , ▁and ▁to ▁maintain ▁order ▁al - H aj j aj ▁imported ▁Sy rian ▁troops , ▁which ▁he ▁hous ed ▁in ▁a ▁new ▁g arrison ▁town , ▁Was it . ▁These ▁troops ▁became ▁cru cial ▁in ▁the ▁supp ression ▁of ▁a ▁revol t ▁led ▁by ▁an ▁Ira qi ▁general , ▁I bn ▁al - A sh ' ath ,