جَاءَ أَخُوكَ خَالِدٌ. — nominative apposition.
رَأَيْتُ أَخَاكَ خَالِدًا. — accusative apposition.
مَرَرْتُ بِأَخِيكَ خَالِدٍ. — genitive apposition.
Khālid still clarifies the same person; his case changes with his antecedent’s function.
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Nominative, accusative, genitive together
ʿAṭf al-Bayān: Definition, Examples, and Contrast with Badal
جَاءَ أَخُوكَ خَالِدٌ. — nominative apposition.
رَأَيْتُ أَخَاكَ خَالِدًا. — accusative apposition.
مَرَرْتُ بِأَخِيكَ خَالِدٍ. — genitive apposition.
Khālid still clarifies the same person; his case changes with his antecedent’s function.