Another form first establishes a person's admirable qualities, then uses an exception-like expression to add a further virtue. The listener anticipates a reservation, but instead receives more praise.
«فَتًى كَمُلَتْ أَوْصَافُهُ غَيْرَ أَنَّهُ»
A young man whose virtues are complete, except that—
«جَوَادٌ فَمَا يَبْقَى عَلَى الْمَالِ بَاقِيًا»
he is so generous that he leaves no wealth remaining.
The supposed exception is a compliment to his generosity, so the praise gains added force.