The ruling on praying behind an imam who rushes through the recitation and does not raise his hands

Question:
The questioner says: My brother Mustafa has some observations regarding an imam they have. He says that he does not raise his hands to the level of his ears, nor to the level of his shoulders, when bowing in the takbir of ihram. Also, he is quick in his recitation, without rules, in a way that is not heard, with a lot of yawning, and he is lazy, as he describes him. Then, he does not say "Ameen" after reciting al-Fatihah. Then, he rushes while performing the prayers. He asks your eminence: What is the ruling on praying behind this imam, and how do you direct him and those like him? May Allah reward you with good. Knowing that the worshippers behind him imitate him and follow his way, and his mosque is the only mosque in their area. May Allah reward you with good for honoring us.

Answer:
In the name of Allah, the Most Gracious, the Most Merciful. Praise be to Allah, Lord of the worlds. May Allah send prayers and blessings upon our Prophet Muhammad, and upon his family and all his Companions. As for what follows, prayer is the pillar of Islam, and it is the second pillar of the pillars of Islam after the two testimonies. It is the distinguishing factor between the believer and the disbeliever, and its status in Islam is great. Allah the Exalted commanded the establishment of prayer in many verses. He commanded the establishment of prayer and did not just say "pray," because the intention is not the formalistic prayer, but rather the true prayer in which there is tranquility and humility before Allah Mighty and Majestic, and the performance of the pillars and obligations, as well as the recommended practices of words and actions that complete it; because it is a great act of worship. Yes.
Tranquility is a pillar of the prayer, and it is not valid without it. The Prophet (peace and blessings be upon him) saw a man praying without being tranquil in his prayer, so he ordered him to repeat it several times. He was coming and greeting the Prophet (peace and blessings be upon him), so he would return the greeting and say, "Pray, for you have not prayed." Then he would go back and pray, then he would order him to repeat the prayer, until he said, "By Him who sent me as a prophet with the truth, I do not know anything other than this, so teach me." So the Prophet (peace and blessings be upon him) taught him how to pray, and in every pillar of it he said, "Until you are tranquil while bowing, until you are tranquil while prostrating, then do that in all your prayer." And he informed that pecking the prayer is among the characteristics of the hypocrites. He said, "That is the prayer of the hypocrite, that is the prayer of the hypocrite, that is the prayer of the hypocrite. He watches the sun until when it is between the horns of the devil, he pecks four times, not completing its bowing or prostration, and not mentioning Allah in it except a little." And he (peace and blessings be upon him) forbade pecking the prayer like the pecking of a crow. So it is not permissible for the worshipper, whether he is an imam or praying alone, to peck the prayer. Rather, he must complete the prayer and establish it as Allah Glorified and Exalted has commanded.
Yes, the imam is commanded to make the prayer easy. As for the one who does not complete the prayer, he should make it easy while still completing it. The Messenger (peace and blessings be upon him) said: “When one of you leads the people in prayer, he should make it easy” . This is making it easy while completing it, due to the prohibition of the Messenger (peace and blessings be upon him) against shortening the prayer. Allah the Exalted said: And among the excess in prayer is not completing it as Allah (Glorified and Exalted is He) commanded. The imam, in particular, bears a great responsibility.
As the Prophet (peace and blessings be upon him) said, "The imam is a guarantor." If he does well, the reward is for him and for those behind him. If he does badly, the sin is upon him. For this reason, he said (peace and blessings be upon him) So he is a trustee, and that he performs it, and that he does not make the prayer easy in a way that spoils it, and deprives those behind him of tranquility in it. And what the questioner mentioned about this imam having some leniencies, yes.
Regarding the prayer, this is something that should not be done. Raising the hands at the takbir of ihram to the level of the shoulders or to the level of the tops of the ears is from the sunnah. Also, raising them when bowing when he says "Allahu Akbar" for bowing, this is also from the sunnah. Yes.
And raising them after he rises from bowing, this is also from the sunnah. It does not invalidate the prayer, but it diminishes its perfection, because it is from the recommended sunnahs. As for the recitation, if he makes a mistake in it that changes the meaning, then his prayer is not valid. If he makes a mistake in reciting al-Fatihah that changes the meaning, such as if he says "An'amta 'alayhim" or "An'amta 'alayhim," then this changes the meaning. Or if he says "Alhamdulillah Rabb al-'alamin" with a kasrah on the lam, then this changes the meaning. His prayer is not valid with that, and he is able to correct it. And it is not valid for him to lead others who are better than him in recitation in this case. As for if the questioner intended that he does not master tajwid, the rules of tajwid, hmm.
This is not obligatory. Tajwid is among the beautifiers of the beauty of performance. But if he does not know the rules of tajwid, the matter in this is easy. It does not invalidate the prayer, as long as he does not make a mistake in the recitation that deviates from the meaning. Their prayer is valid.
And as for saying "Ameen" aloud, it is a sunnah. The Prophet (peace and blessings be upon him) used to say "Ameen" aloud. The Companions used to say it aloud, the imam and the ma'mum, upon finishing the recitation of al-Fatihah. And the saying of "Ameen" is not part of al-Fatihah, but rather it is a confirmation of the supplication in al-Fatihah.
Meaning, the meaning of "Ameen" is "O Allah, accept." Because al-Fatihah is a supplication, a supplication of worship, and a supplication of asking. So when he finishes it, he says "Ameen," meaning "O Allah, accept this great supplication." And this is recommended for both the imam and the ma'mum, and that they raise their voices with it in the loud prayers, and keep it secret in the quiet prayers. The important thing is that it is a sunnah that should not be left. May Allah reward you with good.