Is the prayer valid behind a child who has not reached the age of discernment?

Question:
Honorable Shaykh, may Allah grant you success. He says: Is it permissible to pray behind an imam with a child who has not reached the age of discernment?

Answer:
No, this makes it anomalous. The child who has not reached the age of discernment, his prayer is not valid. The prayer of a child who has not reached the age of discernment is not valid, and his following of the imam is not valid, and so on. Even regarding the child who has reached the age of discernment, there is scholarly disagreement, but the correct view is that there is no harm. However, as for the one who has not reached the age of discernment, this is not a matter of disagreement; his prayer is not valid. Yes.