يَكُونُ ثِفَالُهَا شَرْقِيَّ نَجْدٍ وَلَهْوَتُهَا قُضَاعَةَ أَجْمَعِينَا
Its base is eastern Najd, while all of Quḍāʿah becomes like the grain fed into it.
Thifāl is the pad or material beneath a hand-mill; lahwah is a portion of grain put into it. After “our mill,” these additional details extend the same metaphor rather than introducing another scene.
By naming eastern Najd and Quḍāʿah, the poet enlarges the imagined field of conflict. Geography and tribal names are incorporated into the mechanics of the mill.