Most historians assume that the two armies met where the rivers Clain and Vienne join between Tours and Poitiers. The number of troops in each army is not known. The "Mozarabic Chronicle of 754", a Latin contemporary source which describes the battle in greater detail than any other Latin or Arabic source, states that "the people of Austrasia Frankish forces, greater in number of soldiers and formidably armed, killed the king, Abd ar-Rahman", which agrees with many Arab and Muslim historians. However, virtually all Western sources disagree, estimating the Franks as numbering 30,000, less than half the Muslim force.