Following the uprising that ended Umayyad rule in 750, the Abbasid dynasty came to power and moved the capital of the Caliphate to Baghdad. Apart from the attention given for strategic and commercial purposes, the Abbasids had no interest in Damascus. Thus, the Umayyad Mosque reportedly suffered under their rule, with little recorded building activity between the 8th and 10th centuries. However, the Abbasids did consider the mosque to be a major symbol of Islam's triumph, and thus it was spared the systematic eradication of the Umayyad legacy in the city. The Abbasid governor of Damascus, al-Fadl ibn Salih ibn Ali, built the so-called Dome of the Clock in the eastern section of the mosque in 780. Nine years later, he initiated the construction of the Dome of the Treasury with the purpose of housing the mosque's funds. The 9th-century Arab geographer, al-Muqaddasi, credited the Abbasids for building the northern minaret ("Madhanat al-'Arous"; "Minaret of the Bride") of the mosque in 831 during the reign of the caliph al-Ma'mun (r. 813–833). This was accompanied by al-Ma'mun's removal and replacement of Umayyad inscriptions in the mosque.