«ولا عيب فيهم غير أن سيوفهم»
They have no fault, save that their swords…
«بهن فلول من قراع الكتائب»
Have nicks from clashing with opposing armies.
The first clause denies defects. The broken edges introduced by *ghayr anna* appear to be a shortcoming, but the reason for the wear is continual combat. Thus the image indirectly praises courage and repeated participation in battle.
The swords' condition functions as an allusive sign of bravery. The passage combines allusion with emphatic praise through apparent blame.