Usama's father Murshid captured a Christian family. The son of the family, Ra'ul, converted to Islam and became to all appearances a pious Muslim. He was trained in Murshid's household to be a stonemason. Murshid arranged for him to marry a wife from a good Muslim family, and they had two sons. However a few years later Ra'ul was to take his whole family and their possessions to Apamea, and reconverted to Christianity