It is known that he served in the Umayyad armies in al-Andalus at the Battle of Simancas on August 1, 939, and had converted to Maliki Sunnism, the prevailing madhhab on the Iberian Peninsula.

Considered a partisan of the Umayyads, his assumption of power alarmed the Fatimid Caliph.

The general, when he arrived, addressed the notables, demanding the delivery of Ibn Wasul, but they refused; despite this, Ibn Wasul left the city with his family and treasures and his most loyal supporters, towards the fortress of Tasagdalt.

He was recognized by a member of the Matghara tribe, who handed him over to Jawhar, and on October of the same year, Ibn al-Fath was taken prisoner, chained, and sent to al-Mansuriyya with the Maghrawa emir of Fez, Ahmad ibn Bakr, captured at the same time, and some children of the notables of the city of Sijilmasa as hostages.

[5][6] Jawhar appointed a governor whose name was not known, but shortly after leaving the city he was expelled by the rebellious population who proclaimed again the al-Muntasir Samgu ibn Muhammad.