«فِي النَّسَبِ فَرْخِي وَفِي الْمُكْتَسَبِ فَخِّي»
By lineage he is my fledgling; as a means of gain he is my snare.
Farkhī means my fledgling or child; fakhkhī means my snare. Their compact sound-play lays bare the trick: the young man really is his son, but the father uses his appearance as a tool to acquire money. This is not a genuine murder prosecution, but a staged encounter exploiting the governor’s weakness.