What is the ruling on the du'a' of qunut and the du'a' at the conclusion of the Qur'an?

Question:
May Allah reward you, Your Eminence the Shaykh. There are many questions regarding the ruling on the du'a' of qunut and the du'a' at the conclusion of the Qur'an.

Answer:
Allah (Exalted and Majestic is He) commanded its recitation, and He said, the Exalted: The du'a' in prayer is better than the du'a' outside of prayer. The du'a' in prayer is better than the du'a' outside of prayer. This is in general terms. As for the specific case of the conclusion of the Qur'an, many Muslims have practiced this.
From the time of Imam Ahmad or before, as mentioned by the author of al-Mughni. Imam Ahmad attended the conclusion, prayed behind the imam who was making the du'a', and said "Ameen" to his du'a'. He said that he found the people of al-Hijaz doing this, and so on and so on. So it is a good practice. A person who has doubt, or is not convinced, and has evidence against the conclusion, does not attend it. But for him to make du'a' with the Muslims and attend with the Muslims, participating with the Muslims in the du'a', that is one thing. But for him to be in the mosque and isolate himself while the people are making du'a' and saying "Ameen" to the imam's du'a', and he is isolated, as some of those who claim to be students of knowledge do, displaying opposition in the mosques, that is not good. O brothers, you see that opposition is evil, you see that disagreement is evil. And for those who claim to be students of knowledge to sit and isolate themselves in the mosque—if they sat in their homes, the matter would be light—but for them to sit in the mosque, this has caused division among the Muslims and misunderstanding among the Muslims. This is not permissible. Yes.