When the Muslim army conquered the town of Ayn al-Tamr they found a number of Arab Christian priests in a monastery. One of them was called Nusair another called Serine. They both embraced Islam. Nusair is the father of Mosa Ben Nusair, the supreme commander of the forces which later conquered Spain under the leadership of Tariq bin Ziyad, the second in command for Musa bin Nusayr. Serine, the other convert, is the father of the scholar Ibn Serine who became one of the more celebrated Muslim theologians.