"I prayed behind Abu Hurairah (RA) and he recited Bismillahir-Rahmanir-Rahim, and then recited Umm-ul-Qur'an (Al-Fatiha) and when he reached walad-dallin, he said Amin; and then said Allahu Akbar, when he prostrated and when he stood up from his sitting position. And when he uttered the Taslim (i.e. As-Salamu 'Alaikum), he said, "I swear by the One (i.e. Allah) in Whose Hand my soul is, my Salat (prayer) resembles most that of Allah's Messenger (SAW) than that of anyone among you." [Reported by an-Nasa'i and lbn Khuzaimah].

from his father, from Abu Hurairah that the Messenger of Allah (SAW) said: "Whoever performs a Salat in which he does not recite Umm Al-Qur'an in it, then it is aborted, it is aborted, not complete." He Said: "I said: 'O Abu Hurairah! Sometimes I am behind an Imam.' He said: 'O Ibn Al-Farisi! Then recite it to yourself. For indeed I heard the Messenger of Allah (SAW) saying: Allah, the Most High said: "I have divided the Salat between Myself and My slaves into two halves. Half of it is for Me, and half of it for My slave, and My slave shall have what he asks for. My slave stands and says: All praise is due to Allah, the Lord of All that exists." So Allah, Blessed is He and Most High says: "My slave has expressed his gratitude to Me." He says: "The Merciful, the Beneficent. So he says: "My slave has praised Me." He says: Owner of the Day of Reckoning. He says: "My slave has glorified Me. And this is for Me, and between Me and My slave is: It is You alone whom we worship and it is You alone from whom we seek aid" until the end of the Surah "This is for My slave and My slave shall have what he asks for." So he says: Guide us to the straight path. The path of those upon whom You have bestowed your favor, not those with whom is Your wrath, now those who are astray."'
[Abu 'Eisa said:] This Hadith is Hasan.

(Other chains of narrations)
(Another chain) from Abu Hurairah that the Prophet said: "Whoever performs a Salat in which he does not recite Umm AlQur'an in it, then it is aborted, [it is aborted,] then it is aborted, not complete."

And in Ismã'il bin Abi Uwais' Hadith there is no more than this. I asked Abu Zur'ah about this Hadith, he said: "Both of the Hadith are Sahih." And he argued this with the narrations of Ibn Abi Uwais from his father from Al-'Ala.

When you face the qibla say the takbir; then recite Umm al-Qur’an* and what God wishes you to recite; when you bow place the palms of your hands on your knees, bowing completely and stretching out your back; when you raise yourself straighten your spine and raise your head so as to adopt an erect position; when you prostrate yourself do it completely; when you raise yourself sit on your left thigh; do that every time you bow and prostrate yourself till you are at rest, having finished your prayer. This is the wording of al-Masabih. *The first sura. Abu Dawud transmitted it with a slight alteration, and Tirmidhi and Nasa’i transmitted something to the same effect. In a version by Tirmidhi he said, “When you get up to pray perform the ablution as God commanded you, then say the shahada (The testimony that there is no god but God and that Muhammad is His messenger) and proceed with the prayer. If you know any of the Qur’an recite it, otherwise say, ‘Praise be to God; God is most great; there is no god but God.’ Then bow.”

Abu Huraira reported God’s Messenger as saying, “If anyone observes a prayer in which he does not recite Umm al-Qur’an, it is deficient (he said this three times) and incomplete.” When someone asked Abu Huraira [what he should do] if he were led by an imam, he told him to recite it inwardly, for he had heard God’s Messenger declare that God most high had said, “I have divided the prayer into two halves between me and my servant, and my servant will receive what he asks.” When the servant says, “Praise be to God the Lord of the universe,” God most high says, “My servant has praised me.” When he says, “The Compassionate the Merciful,” God most high says, “My servant has lauded me.” When he says, “Possessor of the day of judgment,” He says, “My servant has glorified me.” When he says, “Thee do we worship and of Thee do we ask help,” He says, “This is between me and my servant, and my servant will receive what he asks.” Then when he says, “Guide us in the straight path, the path of those to whom Thou art generous, not of those with whom Thou art angry nor of those who go astray,” He says. “This is for my servant, and my servant will receive what he asks.” Muslim transmitted it.

Sa'id bin Sa'd bin 'Ubadah (RAA) narrated, 'A small weak man was staying in our tribe, and he committed adultery with one of their slave-women. Sa'd mentioned this to the Messenger of Allah (PBUH), and thereupon he said, "Flog him (according to) the prescribed penalty." The people then said, 'O Messenger of Allah! He is too weak to bear it.' The Messenger of Allah (PBUH) then said, "Get a stalk of the raceme of a palm tree with a hundred twigs and strike him just once." So, they did. Related by Ahmad, An-Nasa'i and Ibn Majah with a good chain of narrators.

If anyone observes a prayer in which he does not recite Umm al-Qur’an, it is incomplete, it is incomplete, it is incomplete, and deficient. (The narrator said) I said: Abu Hurairah, sometime I pray behind the imam(then what should I do)? Pressing my hand he replied: O Persian, recite it inwardly, for I heard the Messenger of Allah (may peace be upon him) as saying that Allah, Most High, has said: I have Me and the Half for my servant and My servant will receive what he asks. The Messenger of Allah(may peace be upon him) said: Recite. When the servant says: “praise be to Allah, the Lord of the Universe,” Allah, Most High says: “My servant has praised me.” When the servant says: “ The Compassionate, the merciful, “Allah Most High says: “My servant has lauded me.” When the servant says: “Owner of the Day of Judgment,” Allah, Most High, says: “My servant has glorified Me” When the servant says: “ Thee do we worship and of thee we ask help. “ (Allah says) “This is between Me and My servant, and My servant will receive what he asks.” When the servant says: “ Guide us to the Straight Path, the path of those whom thou hast favoured, not ( the path) of those who earn thine anger nor of those who go astray,”(Allah says: ) “This is for My servant, and My servant will receive what he asks.”

Some of the Companions of Prophet (saws) went on a journey. They encamped with a clan of the Arabs and sought hospitality from them, but they refused to provide them with any hospitality. The chief of the clan was stung by a scorpion or bitten by a snake. They gave him all sorts of treatment, but nothing gave him relied. One of them said: Would that you had gone to those people who encamped with you ; some of them might have something which could give you relief to your companion. (So they went and) one of them said: Our chief has been stung by a scorpion or bitten by a snake. We administered all sorts of medicine but nothing gave him relief. Has any of you anything, i.e. charm, which gives healing to our companion. One of those people said: I shall apply charm; we sought hospitality from you, but you refused to entertain us. I am not going to apply charm until you give me some wages. So they offered them a number of sheep. He then came to and recited Faithat-al-Kitab and spat until he was cured as if he were set free from a bond. Thereafter they made payment of the wages as agreed by them. They said: Apportion (the wages). The man who applied the charm said: Do not do until we come to the Messenger of Allah (saws) and consult him. So they came to the Messenger of Allah (saws) next morning and mentioned it to him. The Messenger of Allah (saws) said: From where did you learn that it was a charm ? You have done right. Give me a share along with you.

"Allah's Messenger prayed the Subh prayer, and he had difficulty with the recitation. When turned (after finishing) he said: 'I think that you are reciting behind your Imam?'" He said: "We said: 'Yes, Messenger of Allah, by Allah!' He said: 'Do not do that, except for Umm Al-Kitab, for there is no Salat for one who does not recite it.'"