Does an error in reciting Surat al-Fatihah in prayer invalidate the prayer of the imam and the ma'mum?

Question:
May Allah reward you. Honorable Shaykh, several questions have been submitted, and their authors began by sending you the salam and informing you that they love you for the sake of Allah. This questioner says: My question is that I prayed behind a person, and while I was reciting al-Fatihah, the imam recited "Ihdina al-sirat al-mustaqim" with the opening of the letter ha (fathah). Does this invalidate the prayer for the ma'mum? And what is the ruling regarding the imam and the validity of his prayer?

Answer:
This changes the meaning, let me tell you? This changes the meaning. It becomes "give us as a gift." As for "Ihdina" (with kasrah), it means "guide us and make the path easy for us." So what does the change in meaning imply? If a person's recitation is better than this, he must repeat the prayer. As for this imam, if this was the extent of his ability, his prayer is valid, but he should be informed to correct his recitation in the future. However, if he prayed according to his ability and what he knows, his prayer is valid. Allah the Exalted said: But he must be taught so that he improves his recitation in the future. In this case, his prayer is not valid if he is ignorant, except for himself and for those whose state is like his in ignorance. As for one who knows the correct recitation, his prayer behind him is not valid.