From disagreements on some matters or sometimes as a result of misunderstanding when Nubian kings entered Upper Egypt to visit some Coptic churches and the governors of Upper Egypt opposed this visit, but when the purpose of these processions and visits was understood, the Fatimid governors welcomed these kings, as happened once when one of these kings paid.

The Fatimid era in Egypt (459-669 AH) is considered a period during which relations with Egypt were friendly and reconciled with Nubia in general. These relations proceeded well between the two countries. However, Al-Nuwayri, in his book "Nihayat al-Arab fi Funnun al-Arab," refers to an Egyptian invasion of Nubia by Nasser al-Dawla al-Husayn ibn Hamdan during the reign of Caliph al-Mustansir Billah in the year 459 AH / 1066 AD. However, it seems that Al-Nuwayri meant by this Nasser al-Dawla's pursuit of the Nubians during the sedition that erupted among the Fatimid army factions. Nasser al-Dawla pursued them to Upper Egypt following their escape after their defeat at the hands of the Turkish army.

However, during the reign of Caliph al-Mustansir, the Fatimid vizier Badr al-Jamali seized these good relations in diplomatic relations between Islamic Egypt and Christian Nubia when Prince Kanz al-Dawla Muhammad, the amir of Banu Kanz, fled from Aswan to Dongola, the capital of Lower Nubia, in the year 474 AH / 1081 AD. This was after Badr al-Jamali's campaign in Upper Egypt. He sent to the King of Nubia in the name of the Caliph a bishop (a Christian clergyman) accompanied by the noble Sharif nicknamed Sayf al-Dawla, and with them a letter from the Coptic Patriarch requesting the surrender of Kanz al-Dawla al-Fa'r to his capital. The King of Nubia complied and sent Kanz al-Dawla to Cairo, accompanied by the two messengers.

As a result of these good relations, the princes of Banu Kanz requested the mediation of the King of Nubia with Caliph al-Mustansir Billah and his vizier Badr al-Jamali. The King of Nubia mediated and sent this king with them a messenger to Fatimid Cairo in response to the request of these princes. Badr al-Jamali was informed of this mediation by the King of Nubia and allowed them to return their influence in Aswan.

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