Is there a supplication prescribed after the iqamah of the prayer, and what is the ruling on the ma'mum adding "Mighty and Majestic" when the imam says the takbir of ihram?

Question:
May Allah reward you with good, and may He do you good. He says: I hear many of the worshippers reciting a supplication after the iqamah of the prayer, and when the imam prepares for the takbir of ihram. The gist of this supplication is: "O Allah, make our standing before You good, and do not disgrace us on the Day of standing before You." Also, some of them say, after the imam says "Allahu Akbar" for the takbir of ihram, "Mighty and Majestic." Did this come in a hadith from the Messenger of Allah (peace and blessings be upon him)? And what is the ruling on the one who says that?

Answer:
No supplication after the iqamah is established from the Prophet (peace and blessings be upon him). So making it a habit and committing to a specific supplication after the iqamah and before the takbir of ihram is not permissible. However, if a person supplicates occasionally, there is nothing wrong with that. What is prohibited is making this a habit or designating a specific supplication for this occasion for which there is no evidence from the Prophet (peace and blessings be upon him).
Imam Ahmad (may Allah have mercy on him) was asked, and it was said to him: Do you say anything after the iqamah? He said: No, since nothing has come from the Prophet (peace and blessings be upon him). May Allah send blessings upon him.
As for when the imam says "Allahu Akbar" for the takbir of ihram, it is not permissible for the ma'mum to say "Mighty and Majestic," or the like of that; because there is no evidence for this, so it would be a bid'ah (religious innovation). Yes.