Reciting “al-zalimun” instead of “al-kafirun”

Question

If a person in prayer recites “إِنَّهُۥ لَا يُفْلِحُ ٱلظَّـٰلِمُونَ” instead of “إِنَّهُۥ لَا يُفْلِحُ ٱلْكَـٰفِرُونَ”, is his prayer valid or not?

Answer

Reciting this way deliberately is not permissible, and if one recites this way by oversight, the prayer will not become fasid (invalid).

Source: Fatawa Mahmudiyya

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