The source includes ellipsis affecting a described noun (موصوف) or its qualifier (صفة). Sometimes a remaining quality, together with context, identifies the unnamed subject. In other settings a quality may be understood rather than stated.
As a supplemental teaching example, «مررت بكريم» could mean “I passed a generous person,” with the person understood through the adjective. This is not presented as an original quotation from the textbook.
Sound analysis must explain both what is understood and how the context supports it. A speculative omitted phrase without evidence is not a defensible rhetorical reading.