The <a href="https://en.wikipedia.org/wiki/Rashidun_Caliphate" id="mwGg" rel="mw:WikiLink" title="Rashidun Caliphate">Rashidun Caliphate</a> defeats the <a href="https://en.wikipedia.org/wiki/Sasanian_Empire" id="mwGw" rel="mw:WikiLink" title="Sasanian Empire">Sasanian Empire</a> at the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Battle_of_al-Qādisiyyah" id="mwHA" rel="mw:WikiLink" title="Battle of al-Qādisiyyah">Battle of al-Qādisiyyah</a> in <a href="https://en.wikipedia.org/wiki/Iraq" id="mwHQ" rel="mw:WikiLink" title="Iraq">Iraq</a>.