Does the prayer of one who intentionally substitutes a word from the Qur'an during his prayer become invalid?
Machine translationRead the Arabic original
Question:
He says: Honorable Shaykh, may Allah grant you success, if a person praying, whether he is the imam or praying alone, substitutes a word from the Qur'an during his prayer, saying "the Mighty, the Merciful" instead of "the All-Hearing, the All-Knowing," intentionally, does his prayer become invalid because of that?
Answer:
If this happens in al-Fatihah, his prayer is invalid. But if it happens in other than al-Fatihah, it is forbidden, but his prayer is not invalid.
He says: Honorable Shaykh, may Allah grant you success, if a person praying, whether he is the imam or praying alone, substitutes a word from the Qur'an during his prayer, saying "the Mighty, the Merciful" instead of "the All-Hearing, the All-Knowing," intentionally, does his prayer become invalid because of that?
Answer:
If this happens in al-Fatihah, his prayer is invalid. But if it happens in other than al-Fatihah, it is forbidden, but his prayer is not invalid.
Source
قناة «العلامة الدكتور صالح الفوزان»، [ 3436/475] هل تبطل صلاة من أبدل لفظًا من القرآن متعمدًا أثناء صلاته؟ - الشيخ صالح الفوزان — youtube.com
The Arabic text is a machine transcription of the audio recording.