دَخَلَ زَيْدٌ وَوَجْهُهُ مُبْتَسِمٌ.
Zayd entered while his face was smiling.
The nominal clause “wajhuhu mubtasimun” relates to the possessor through its pronoun and wāw; it reports Zayd's circumstance during arrival, not simply a second unrelated piece of news.
Contrast “Zayd entered, and the lesson began”: there wāw coordinates two independent events. The presence of the same particle is insufficient to determine its rhetorical role without analyzing the link between clauses.
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Supplementary Practice 7: Editing Expressions, Weighing Context and Rhetorical Critique
دَخَلَ زَيْدٌ وَوَجْهُهُ مُبْتَسِمٌ.
Zayd entered while his face was smiling.
The nominal clause “wajhuhu mubtasimun” relates to the possessor through its pronoun and wāw; it reports Zayd's circumstance during arrival, not simply a second unrelated piece of news.
Contrast “Zayd entered, and the lesson began”: there wāw coordinates two independent events. The presence of the same particle is insufficient to determine its rhetorical role without analyzing the link between clauses.