The beginnings of the Islamic call in Sudan
a) The entry of Islam into Sudan: With the emergence of Islam in the Arabian Peninsula, the lands we can call "Eastern Sudan" or "Nile Valley Sudan" consisted of the Beja land and three kingdoms whose influence and presence extended between Aswan and Sennar. These three kingdoms, their current homeland, are: First: The Kingdom of Makuria (Nobatia). I will speak with the second kingdom (Alwa) and they formed the Kingdom of Nubia with its capital Dongola. The third kingdom is Alwa, with its capital Soba. By the beginning of the sixth century AD, Christianity had become the most widespread religion among the inhabitants of the kingdoms of Nubia and Alwa, and a few of the Beja people had adopted it. Therefore, when Islam came through the Islamic conquests to this region, it found that Christianity had become deeply rooted and firmly established. Perhaps this explains the attacks carried out by the Nubians on Upper Egypt, which were actually expressions of religious sympathy of the Nubians towards the Copts of Egypt, who had been defeated by the Islamic armies in the year 641 AD. There was a close and intimate link between the Nubian Church and the Church of Alexandria, which led the former to resist the Islamic campaigns on its lands and to stand against the Muslim conquerors. In fact, Islam did not infiltrate these lands solely through Egypt, but there were two other ways through which Islam entered the Eastern Sudan region: The first is a route from Hijaz across the Red Sea via the ports of Badi, Aidhab, and Suakin. The second is from the Maghreb across the westernmost lands of Sudan.
Yusuf Fadl Hasan (Professor): Studies in the History of Sudan, Vol. 1. First Edition. Khartoum: University Printing House, Khartoum, 1971, p. 79. Yusuf Fadl Hasan (Professor) himself, p. 22. Yusuf Fadl Hasan (Professor) and others: Early Islamic History in Sudan, First Collection. Dar Al-Fikr Printing and Publishing, Khartoum, 1978, p. 12. Muhammad Al-Nur Abd Allah: Introduction to the Book of Classes, edited and commented on by Dr. Yusuf Fadl. First Edition. Khartoum University Printing Department, Khartoum, 1974, p. 22.