لَا حُكْمَ بِلَا بَيِّنَةٍ.
No judgment without evidence.
This concise maxim carries a substantial general principle in few words. Its force does not require inventing unspecified missing words. As an exercise, it illustrates the logic of ījāz al-qaṣr, where density of meaning matters more than reconstructing a deleted grammatical element.
By contrast, the question matā naḥkumu?—when shall we decide?—may be answered with baʿda al-faḥṣi, 'after examination'. The full predication naḥkumu baʿda al-faḥṣi is recoverable from the question. That is a clearer case of ījāz by omission. The distinction separates semantic concentration from syntactically supported ellipsis.