If the imam makes a mistake in reciting al-Fatihah, may the ma'mum leave?
Machine translationRead the Arabic original
Question : If the imam makes a mistake in his recitation of al-Fatihah or something else, does the imam here leave?
Answer : If the mistake changes the meaning and it is pointed out to him, but he persists, then the prayer is invalid, and at that point it is obligatory for you to leave him. No, your prayer is not invalidated.
Answer : If the mistake changes the meaning and it is pointed out to him, but he persists, then the prayer is invalid, and at that point it is obligatory for you to leave him. No, your prayer is not invalidated.
Source
قناة «فضيلة الشيخ محمد بن صالح العثيمين»، 4571 - 4600 إذا لحن الإمام في الفاتحة هل للمأموم أن ينصرف؟ ابن عثيمين — youtube.com
The Arabic text is a machine transcription of the audio recording.