غُلَامٌ = a boy/servant; غُلَامِي = my boy/servant.
كِتَابٌ = a book; كِتَابِي = my book.
The final yāʾ is an attached pronoun, not a separately declined noun. The preceding noun is the mudāf (first term of iḍāfah).
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Recognizing the Possessive Yāʾ
Iḍāfah to Yāʾ al-Mutakallim and the Six Nouns
غُلَامٌ = a boy/servant; غُلَامِي = my boy/servant.
كِتَابٌ = a book; كِتَابِي = my book.
The final yāʾ is an attached pronoun, not a separately declined noun. The preceding noun is the mudāf (first term of iḍāfah).