أَلَا أَبْلِغْ بَنِي الطَّمَّاحِ وَدُعْمِيًّا فَكَيْفَ وَجَدْتُمُونَا
Tell Banū al-Ṭammāḥ and Duʿmiyy: what did you find us to be like?
Alā attracts attention, while abligh is an imperative: “convey.” Fa-kayfa wajadtumūnā asks opponents to state how they found the tribe in actual encounters.
The question is rhetorical and argumentative, not an open inquiry. The poet moves from generalized boasting to named addressees whose experiences are invoked as corroboration.