Amr ibn Muhammad ibn al-Qasim

Amr ibn Muhammad ibn al-Qasim was with al-Hakam ibn Awana, to whom he delegated and whom he appointed over his great affairs. Al-Hakam sent him on a raid from al-Mahfuza, and when he was victorious he ordered the building of a city beyond the lake and named it al-Mansura. In the report, this is the city in which the agents now reside. ¹

The summary does not give the date of the raid or the page, and it needs an additional source.