الْعَدْلُ أَسَاسُ الْمُلْكِ.
Justice is the foundation of government.
A short sentence can convey an extensive social principle, but brevity alone does not establish technical ījāz al-qaṣr. In this form the intended significance is compressed into expressed wording; the analysis need not reconstruct a specific omitted constituent.
An extended commentary might describe trust, legitimacy, and stability as implications of the maxim. That interpretive richness does not prove that some particular verb or noun was grammatically deleted from the sentence. Semantic density and syntactic ellipsis must be kept distinct.