The Emir, in his attempt to annex the Kingdom of Asturias, organized two armies for the purpose of enforcing this annexation. The first army was tasked with conquering Galicia, and the second with conquering western Basque lands. When Hisham I was returning to Córdoban territory with the spoils of his conquests, the Christians attacked. The Muslims, under the competent leadership of general Yusuf ibn Bujt, were able to successfully repel the attack and to further turn the ambush into a victory.