Abu Firas was Sayf al - Dawla 's cousin .
Abu Firas had been raised at his court , while Sayf al - Dawla had married his sister Sakhinah and appointed him governor of Manbij and Harran .
Abu Firas was Sayf al - Dawla 's cousin and had been raised at his court , while Sayf al - Dawla had married his sister Sakhinah and appointed him governor of Manbij and Harran .