Page "Almoravid dynasty" Paragraph 22

According to some scholars Ali ibn Yusuf was a new generation of leadership that had forgot the desert life for the comforts of the city.

Under the combined action of his Christian foes in Iberia and the agitation of Almohads ( the Muwahhids ) in Morocco.

After Ali ibn Yusuf's death in 1143, his son Tashfin ibn Ali lost ground rapidly before the Almohads, and in 1146 he was killed by a fall from a precipice while attempting to escape after a defeat near Oran.