The Muslims of al-Andalus (Islamic Iberia) consisted of Arabs, Berbers and native Iberians who converted to Islam (+descendants). Were there significant social distinctions between the three ethnic groups?
The official and literary language was Arabic and presumably everybody speaks it. But did they, for example, live in separate communities, speak in different vernaculars at home, or have distinguishable names, clothings or customs from each other? Did they intermarry? Or were they generally assimilated since they had the same religion?
I'm interested in the period around the 10th century, e.g. during the Caliphate of Córdoba: long enough after the initial conquest, but still before the disintegration of the Muslim power.