And likewise, the discipline of the invading Banu Ghārib in response to their repeated raids on Egyptian lands and their continuous harassment of Arabs who had migrated to those regions to settle, to call to Islam, and to search for minerals. After al-ʿUmrī had dealt with the Beja, he turned west towards the Nile in the region of al-Marrīs, where he expelled its ruler, destroyed its city, and captured many Nubians. Then he advanced south, following Wadi al-ʿAllāqī until he reached the region of Shankīr, at the bend of the Nile westward, near the kingdom of the Abābda, where he discovered new sites for gold cities. A large number of Arabs, mostly from Rabīʿa and Juheina, had joined him in this campaign to establish the Arab province. The objective of this campaign appeared to be to discover new settlements that would accommodate these Arabs so that he could establish his emirate. A number of tribes arriving from Syria had also set out with him, including the tribe of Saʿd al-ʿAshīra and Qays, among others. After they had obtained the right of permanent residence in the region of al-Marrīs from the Nubians after their defeat, al-ʿUmrī himself aimed to establish an independent emirate under his leadership. Al-ʿUmrī had settled with a group of Muḍar, and during this time, a dispute arose between the Banu Muḍar and the Banu Rabīʿa, caused by the killing of a man from Muḍar. The two parties convened without al-ʿUmrī being invited to the meeting. He became angry and left their homeland, which appeared to be in the Red Sea mountains. A group of people followed him, and he refused to return until they gave him a pledge that they would not do anything except by his command. Al-ʿUmrī took an oath of allegiance from the Arabs of Muḍar and Rabīʿa, and with them, he entered the mining region. The mining region where al-ʿUmrī worked was south of the area known as Umm Nabārī, located northeast of railway station number six, west of the caravan route between Kūrsukū and Abū Ḥamad.