The Imam Reading from a Book After the Prayer and the Ma'mum Reminding Him

Question:
Honorable Shaykh, may Allah grant you success. The imam of a mosque has a habit of reading from a book to the congregation immediately after finishing the 'Asr prayer. When he started reading, a ma'mum reminded him that he had missed something. Does their prayer become invalid and they must start over, or do they continue?

Answer:
This is an unverified statement. Reading outside the prayer is a separate matter. According to the general rule, they should listen. However, the correct view, and Allah knows best, is that they do not listen, because this section has not been established. It is also prescribed speech, not just ordinary talk. It is prescribed speech from the hadiths of the Messenger of Allah (peace and blessings be upon him) or reading a verse. In that case, Allah willing, it does not invalidate his prayer, and he accepts his prayer and testifies to the month. But if he talks to someone, asks about his condition, his children, or other matters, then he has clearly abandoned it. Yes.