Az-Zalzalah begins with a future temporal-conditional frame and closes with general rules expressed through man. Al-ʿĀdiyāt begins with an oath and linked rapid scenes, then employs inna ... la- for the oath response, and finally the rebuking question afalā yaʿlam.
AspectAz-ZalzalahAl-ʿĀdiyāt
OpeningTemporal and conditional sceneOath and rapid movement
EmphasisCognate accusative and contrastOath, inna and lām
ConclusionTwo general conditionalsEmphatic report of divine knowledge
The comparison shows that eloquent speech can reach a related moral conclusion through markedly different structures.