Why may the closing rule of az-Zalzalah illustrate ījāz al-qaṣr?

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

• Because its verb must be omitted
• Because every word in it is a synonym
• Because the conditional answer is absent
• Few expressed words convey a comprehensive principle of accountability