Jāʾa akhūka Khālidun: Khālidun may be analysed as badal identifying the brother; aṣ-ṣāliḥu in jāʾa akhūka aṣ-ṣāliḥu describes him and is an adjective.
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Apposition versus Adjective
Choosing the Correct Parsing: Meaning, Governance and Context
Jāʾa akhūka Khālidun: Khālidun may be analysed as badal identifying the brother; aṣ-ṣāliḥu in jāʾa akhūka aṣ-ṣāliḥu describes him and is an adjective.