King of the taifa of Carmona, born around the year 1000 and died in 1042.
Muhammad belonged to the Berber family of the Banu Birzal, of the tribe of Zanata, who arrived to the Peninsula in the last quarter of the tenth century; He/She was son of Abdallah ibn Ishaq, whom the Caliph al - Musta'in had given the Government of Carmona in 1013. He/She succeeded his father upon his death in 1024 and assumed the position of haajib or Chamberlain.
Nicknamed "called the civil war", Muhammad allied with the Kings of other taifas for plans specific, dependent on the circumstances of the moment: between 1027 and 1028 Muhammad participated in the offensive hammudid against Sevilla by Yahya ibn Ali Ibn Hammud, recently Dethroned in Córdoba, and that got the hammudid Caliph was recognised in Seville for some time; However two years later Muhammad I joined Ismail, son of Abul Qasim Muhammadof Seville, to attack the Kingdom of Badajoz and together they defeated Muhammad, son of Abdallah ibn Maslam of Badajoz, who made prisoner, holding also the plaza de Beja. In 1035, Muhammad was expelled from Carmona by the hammudid Yahya Caliph and only was able to recover his Kingdom with the help of the people of Seville and the defeat and death of Yahya.
After the proclamation in Seville of the False Hisham II (1035), Carmona swore you submission initially, although a few months after Muhammad al - Birzalí took the Berber coalition involving Zuhayr of Almería and ibn Maksan Habbus of Granada, who were faithful to the new Caliph hammudid, Idris. At the end of August 1036 the three regulos began an expedition against Seville and after occupying the village of Tastana and attack the castle of Tabuca, began the taking of Seville, Triana pillaging and taking possession of Aznalcazar; There they proclaimed Caliph Idris I ibn Ali (October of 1036), although they were not able to conquer Seville. Muhammad suffered response in 1039, when Carmona was attacked by the Kingdom of Seville. Went to the relief of the King of Carmona of Malaga and Granada, achieving an important victory over Seville army in the fields of Ecija, October 5, 1039. Three years after Muhammad died in combat against Seville, whose new King, Abú Amr Abbad had resumed the war against Carmona at the beginning of his reign.
Muhammad was succeeded by his son Ishaq, who continued the war against Sevilla.
DOZY, R. Histoire des Muslim d'Espagne juste la conquête de l' Cordoba pas les Almoravides. Paris, 1932.
JOVER ZAMORA, J.M. (dir). "The Taifa kingdoms. Al - Andalus in the 11th century,"in history of Spain Menéndez Pidal, vol. VIII-I. Madrid, Espasa Calpe, 1994.