ElementLiteral objectRole in the warning
الرَّحَىA grinding millForce of crushing
ثِفَالIts underlayCompletes the concrete mill scene
تَعْرُكُكُمْGrinds youDestruction of human lives
The poet does not merely name a mill. The phrase bi-thifālihā evokes a recognizable everyday process in its detail. This makes the figure forceful: those caught in war become as powerless as grain under the stones.