Egypt, 21 AH / 641 AH, and it may have been earlier than that, as this did not prevent some Muslims from arriving via the Red Sea during the era of the Noble Prophet, peace be upon him, or during the era of the Rightly Guided Caliph, Abu Bakr Al-Siddiq. This is because the Baqt treaty stipulated that the men of the Kingdom of Makuria in Dongola would maintain the mosque that was built in the capital of their country, not in a city far from or near the capital. How can it be imagined that this mosque was established before 651 AD unless there was a large Muslim community and not just a few individuals?

The important thing is that the establishment of the Funj Sultanate was one of the strong reasons that propelled the movement of Islam and its widespread spread, and its infiltration south into Sudan until it entered the lands of the Equatoria Province, which is the southern border of Sudan. The establishment of that sultanate heralded a new era in the path of Islamic da'wah to those regions, as men of Islamic da'wah came from Egypt, Hijaz, Iraq, Sham, the Maghreb, Andalusia, and from all parts of the Islamic world to call to the One Mighty God under the security and tranquility that the Funj state spread in Sudan.

The Funj state, which took Al-Fashir as its capital, also participated in this strong and established Islamic construction, so that it could practice its extensive religious activity in the western parts of Sudan to participate in enriching the Islamic movement that was beginning to take Sudan as an Islamic stronghold from which to call to Islam among the Arab tribes spread in the south, east, and west of Sudan, where the vast equatorial regions are, and where Sudanese men of Islamic da'wah themselves and their brethren, sons of Islam from other countries, worked to build this strong Islamic nation in the heart of the African continent.