وَٱلَّتِىٓ أَحْصَنَتْ فَرْجَهَا فَنَفَخْنَا فِيهَا مِن رُّوحِنَا وَجَعَلْنَـٰهَا وَٱبْنَهَآ ءَايَةً لِّلْعَـٰلَمِينَ
Compare 21:91 and 66:12
highlighted words differ between verses
وَمَرْيَمَ ٱبْنَتَ عِمْرَٰنَ ٱلَّتِىٓ أَحْصَنَتْ فَرْجَهَا فَنَفَخْنَا فِيهِ مِن رُّوحِنَا وَصَدَّقَتْ بِكَلِمَـٰتِ رَبِّهَا وَكُتُبِهِۦ وَكَانَتْ مِنَ ٱلْقَـٰنِتِينَ
Both describe the divine spirit being breathed into Maryam but 21:91 uses 'fiha' (into her, feminine) while 66:12 uses 'fihi' (into it, masculine), referring to different grammatical antecedents.
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