The Banu Kanz were not bigoted or supporters of a specific Islamic government, religious sect, or political ideology. Rather, their relationship with any state in Egypt was determined by each state's view of the Banu Kanz's sovereignty over the region of Sudan. However, the movement of the Banu Kanz to the south was in favor of Arab-Islamic presence and the spread of Islamic da'wah and Arab-Islamic culture. They gradually began to expand their influence over the region of al-Mairis. At the same time, they continued to make attempts to regain their position in Aswan until they succeeded in reclaiming it later in the years 790 AH / 1381 AD. However, until the end of the Ayyubid state, the Banu Kanz did not undertake any significant activity within Egyptian territories. It appears that during their stay in al-Mairis, they benefited from the presence of groups from Nubian tribes who had converted to Islam, and from their Arab brethren who had preceded them in migrating to those areas. Archaeological research has indicated the presence of large numbers of these groups residing in the region of al-Mairis. Consequently, the influence of the Banu Kanz increased.

When the Ayyubid state ended in Egypt, it became very clear that the relationship between Egypt and Nubia had not undergone any fundamental change. This was because the Banu Kanz controlled the southern part of the border from Egypt to Nubia. However, it can be stated with utmost clarity and certainty that despite the conflict that arose between the Banu Kanz and the Ayyubid state, the Ayyubids in Egypt worked, whether directly or indirectly, to strengthen Islamic influence in Nubia, supporting it by all means. This was done overtly by encouraging the migration of Arab tribes or by providing assistance to some migrating Arab tribes.

Indeed, Islamic activity increased during the Ayyubid rule of Egypt, Islam spread, and the region was imbued with a purely Islamic character. Perhaps the most compelling evidence of the spread of Islam is that when the Mamluk Sultan Baybars sent his envoy to Nubia in the year 747 AH / 1275 AD, the ruler of the mountain, who was the governor of the region of al-Mairis, bore an Arab-Islamic name.

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