Source: The Fihrist of Al-Nadim: A Tenth-Century Survey of Muslim Culture (Columbia University Press) 1970 A.D
This source confirms yet again that in the medieval epoch Berbers were seen as being black. The Himyarite connection to the Abyssinians is confirmed yet again. The multi-cultural nature of the Nubians is confirmed because they spoke Syriac, Greek, and Coptic.
This source confirms the blackness and ancient origins of the Nabateans, as well.