السَّلَامَةُ قَبْلَ السُّرْعَةِ.
Safety comes before speed.
This compact statement conveys a complete and widely applicable principle about travel decisions. In a suitable context it illustrates ījāz al-qaṣr: much usable meaning in little wording, without dependence on a specific syntactically omitted clause.
By contrast, in shaʾalū ... may need an apodosis supplied from context. Calling both the same type of ellipsis would obscure an essential grammatical distinction.