 Complete the following phrase:  Chase, a Hellenized form of the Arabic name Hasan, is mentioned by the De Administrando Imperio, a work compiled in the middle of the 10th century by Constantine VII Porphyrogennetos, and the chronicles of Theophanes Continuatus and Georgius Monachus. Along with his younger brother, who received the Christian name Niketas on his baptism, he was reportedly a slave of the patrikios Damian, the parakoimomenos of Emperor Michael III , implying that they had been captured as prisoners of war during a 