Reciting in prayer without moving the lips
Machine translationRead the Arabic original
Question:
Your Eminence, may Allah preserve you, peace be upon you and Allah’s mercy and blessings. What is the ruling on one who completes his prayer after the imam has finished, but he recites al-Fatihah and the rest of his prayer without moving his lips? May Allah protect you?
Answer:
He must recite in a way that he hears with his own ears; it must be a real recitation where he articulates the words. Merely intending to recite is not sufficient. He must recite in a way that he hears with his ears, if he is able to hear; that is, a real recitation where he pronounces the words. Yes.
Your Eminence, may Allah preserve you, peace be upon you and Allah’s mercy and blessings. What is the ruling on one who completes his prayer after the imam has finished, but he recites al-Fatihah and the rest of his prayer without moving his lips? May Allah protect you?
Answer:
He must recite in a way that he hears with his own ears; it must be a real recitation where he articulates the words. Merely intending to recite is not sufficient. He must recite in a way that he hears with his ears, if he is able to hear; that is, a real recitation where he pronounces the words. Yes.
Source
وجوب التفقه في الدين — islamhouse.com (1:14:02)
The Arabic text is a machine transcription of the audio recording.