Qirat - 'Ali b. Yusuf with heir Tashfin

The co-regency coinage of 'Ali b. Yusuf naming his son Tashfin as heir belongs to the last coherent phase of Almoravid authority in al-Andalus. By 1139, Almohad pressure from North Africa was already fracturing the dynasty's grip, and Tashfin would inherit little more than a collapsing frontier. He outlived his father by less than two years, dying in 1145 near Oran — reportedly after his horse threw him from a cliff during battle.

The qirat denomination itself reflects the fractional silver system the Almoravids maintained across Iberia and the Maghreb in lieu of a robust gold infrastructure at this scale.