Yahya related to me from Malik from al-Ala ibn Abd ar-Rahman ibn Ya'qub that he heard Abu's-Sa'ib, the mawla of Hisham ibn Zuhra, say he had heard Abu Hurayra say, "I heard the Messenger of Allah, may Allah bless him and grant him peace, say, 'Whoever prays a prayer without reciting the umm al-Qur'an in it, his prayer is aborted, it is aborted, it is aborted, incomplete.' So I said, 'Abu Hurayra, sometimes I am behind the imam.'Hepulled my forearm and said, 'Recite it to yourself, O Persian, for I heard the Messenger of Allah, may Allah bless him and grant him peace, say that Allah the Blessed, the Exalted, said, "I have divided the prayer into two halves between me and my slave. One half of it is for Me and one half of it is for IVly slave, and My slave has what he asks." ' The Messenger of Allah, may Allah bless him and grant him peace, said, "Recite." The slave says, 'Praise be to AIIah, the Lord of theWorlds.' Allah the Blessed, the Exalted, says, 'My slave has praised Me.' The slave says, 'The Merciful, the Compassionate.' Allah says, 'My slave has spoken well of Me.' The slave says, 'Master of the Day of the Deen.' Allah says, 'My slave has glorified Me.' The slave says, 'You alone we worship and You alone we askforhelp.'Allahsays,'This ayat is between Me and My slave, and for My slave is what he asks. 'The slave says, 'Guide us in the straight Path, the Path of those whom You have blessed, not of those with whom You are angry, nor those who are in error. ' Allah says, 'These are for My slaves, and for my slave is what he asks . ' " ' "

Abu Sa’īd al-Khudrī said, “Some of the Companions of the Prophet ﷺ went on a journey. They alighted with a certain clan of the Arabs. Someone of them said, “Our chief has been stung by a scorpion or bitten by a snake. Has any of you something which gives relief to our chief?” A man of the people said, “Yes, I swear by Allah. I can recite an invocation, but we asked you for hospitality and you denied it to us. I shall not recite the invocation until you give me some payment.” So, they promised to give some sheep to him. He came to him and recited Sūrah al-Fātiḥah over him and blew (upon him) till he was cured, and he seemed as if he were set free from a bond. So, they gave him the payment that was agreed between them. They said, “Distribute it.” The man who applied the treatment said, “Do not do it until we approach the Messenger of Allah ﷺ.” And He ﷺ said, “From where did you learn that it was a treatment? You have done right. Apportion them, and give me a share along with you.” Reference: Sahih al-Bukhari 5007

"Allah's Messenger turned (after praying) from a Salat in which he recited aloud and said: 'Has any one of you recite along with me just now?' A man said: 'Yes, O Messenger of Allah.' He said: 'Indeed I said to myself: Why was I being contended with for the Quran?'" He (Az-Zuhri one of the narrators) said: "So when they heard that from Allah's Messenger, the people stopped reciting with Allah's Messenger in the prayers that Allah's Messenger recited aloud."