In جَاءَتْ زَيْنَبُ, the final تْ belongs to the verb and indicates a feminine subject. The tāʾ in the book’s example طَلْحَة belongs to the form of a noun.
Do not confuse a verb’s feminine marker with the feminine ending relevant to a noun’s declension.
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Causes of Diptote Status — Femininity and Its Conditions
In جَاءَتْ زَيْنَبُ, the final تْ belongs to the verb and indicates a feminine subject. The tāʾ in the book’s example طَلْحَة belongs to the form of a noun.
Do not confuse a verb’s feminine marker with the feminine ending relevant to a noun’s declension.