Ījāz al-qaṣr (إيجاز القصر) expresses its sense through words actually present. Its effectiveness does not depend on reconstructing a missing clause.
A conventional Arab maxim is «الْقَتْلُ أَنْفَى لِلْقَتْلِ», meaning that deterrent punishment may prevent killing. The Qurʾānic statement examined next provides an especially rich positive expression of the purpose of lawful retaliation.
It is a category error to infer ellipsis merely from brevity. Compression and omission must be analysed separately.