Prior to the Arab conquest
, al-Qādisiyyah was but a small village on the western side of the Euphrates River
, near an old castle at `Udhayb, and was possibly part of the Wall of the Arabs
(Iranica, al-Qadisiyyah).[clarification needed]
However, during the centuries that followed, al-Qādisiyyah grew in size and importance and was a noted stop along very important highways of commerce that led to Baghdād and Makkah (see Alavi, 100).