الْعَدْلُ أَسَاسُ الثِّقَةِ.
Justice is the basis of trust.
This compact yet complete maxim can illustrate ījāz al-qaṣr: no definite omitted clause is needed to construct its meaning. By contrast, when the inspector answers “كَمْ مِيزَانًا فَحَصْتَ؟” with “عِشْرِينَ”, the context supplies the omitted verb and construction: ījāz al-ḥadhf.
Ellipsis requires a recoverable expression. One should not invent an omission in every short sentence or treat a one-word answer as context-free when the preceding question supplies its syntactic role.