The book states: dhū is not normally annexed to an attached pronoun.
جَاءَ ذُو عِلْمٍ — A man of knowledge came: dhū is the nominative subject marked by wāw and is mudāf; ʿilmin is the genitive mudāf ilayh.
The regular pattern attaches dhū to an overt noun, not as abī attaches to -ī. The verse that follows is treated as exceptional.
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Iḍāfah to Yāʾ al-Mutakallim and the Six Nouns
The book states: dhū is not normally annexed to an attached pronoun.
جَاءَ ذُو عِلْمٍ — A man of knowledge came: dhū is the nominative subject marked by wāw and is mudāf; ʿilmin is the genitive mudāf ilayh.
The regular pattern attaches dhū to an overt noun, not as abī attaches to -ī. The verse that follows is treated as exceptional.