What connects the ingratitude assertion to the final verse of al-ʿĀdiyāt?

Supplementary Practice 25 — Comparative Rhetoric of Sūrat az-Zalzalah and Sūrat al-ʿĀdiyāt

• Connecting human disposition to divine knowledge and judgment
• Replacing the moral topic with a wholly unrelated subject
• Restricting divine knowledge to the actions of horses
• Directly denying and reversing the earlier assertion