“I said to Umm Salamah: ‘O Mother of the Believers! What was the supplication that the Messenger of Allah (saws) said most frequently when he was with you?” She said: ‘The supplication he said most frequently was: “O Changer of the hearts, make my heart firm upon Your religion (Yā Muqallibal-qulūb, thabbit qalbī `alā dīnik).’” She said: ‘So I said: “O Messenger of Allah, why do you supplicate so frequently: ‘O Changer of the hearts, make my heart firm upon Your religion.’ He said: ‘O Umm Salamah! Verily, there is no human being except that his heart is between Two Fingers of the Fingers of Allah, so whomsoever He wills He makes steadfast, and whomever He wills He causes to deviate.’”

Anas reported that God’s messenger often said, “O Thou who turnest the hearts about, establish my heart in Thy religion.” Anas said, “Prophet of God, do you fear for us who believe in you and in your message?” He replied, “Yes. The hearts are between two of God’s fingers and He turns them about as He wills.” Tirmidhi and Ibn Majah transmitted it.

I asked Umm Salamah (May Allah be pleased with her), "O Mother of the Believers! Which supplication did the Messenger of Allah (PBUH) make frequently when he was in your house?" She said: "He (PBUH) supplicated frequently: 'Ya muqallibal-qulubi, thabbit qalbi 'ala dinika (O Controller of the hearts make my heart steadfast in Your religion)."

[At- Tirmidhi].

Anas said, "The Prophet, may Allah bless him and grant him peace, most frequently said, "O Allah, O Overturner of hearts, make my heart firm in Your deen."

“I entered upon the Prophet (saws) while he was praying and he had placed his left hand on his left thigh, and he had placed his right hand on his right thigh, and clasped his fingers, and extended his index finger, and he was saying: ‘O changer of the hearts, make my heart firm upon Your religion (Yā muqallibal-qulūbi thabbit qalbī `alā dīnik).’”

"The Messenger of Allah (s.a.w) would often say: Ya Muqallibal-qulub, thabbit qalbi 'ala dinik('O Changer of the Hearts! Strengthen my heart upon Your Religion.)' So I said: 'O Prophet of Allah! We believe in you and what you have come with, but do you fear for us?' He said: 'Yes. Indeed the hearts are between two Fingers of Allah's Fingers, He changes them as He wills.'"

"The Messenger of Allah (saas) often used to say: 'Allahumma thabbit qalbi 'ala dinika [O Allah, make my heart steadfast in (adhering to) Your religion].' A man said: 'O Messenger of Allah! Do you fear for us when we have believed in you and in (the Message) that you have brought?' He said: 'Hearts are between two of the fingers of the Most Merciful, and He controls them.'" (Hasan)Al-A'mash (one of the narrators) indicated with his fingers.

"I heard the Messenger of Allah say: 'There is no heart that is not between two of the Fingers of the Most Merciful. If He wills, He guides it and if He wills, He sends it astray.' The Messenger of Allah used to say: 'O You Who makes hearts steadfast make our hearts steadfast in adhering to Your religion.' And he said: 'The Scale is in the Hand of the Most Merciful; He will cause some peoples to rise and others to fall until the day of Resurrection.'"

Yahya related to me from Malik that he had heard that the Messenger of Allah, may Allah bless him and grant him peace, used tosay, "No, by the Overturner of hearts."

Ibn ‘Umar said the greatest oath the Prophet used was, “No, by Him who overturns the hearts.” Bukhari transmitted it.

The oath which the Messenger of Allah (saws) often used was this: No, by Him who overturns the hearts.

"The oath by which the Messenger of Allah used to swear was: 'No, by the Controller of the hearts.'"

The Prophet's oath (SAW) used to be: "No, by Him Who turns (changes) the hearts." [Reported by al-Bukhari].

From this father (Ibn Umar) who said: "The Messenger of Allah (saws) often would swear with this oath: 'No! By the Changer of the Hearts.'"

We were sitting in the company of Umar and he said: Who amongst you has heard the Messenger of Allah (may peace be upon him) talking about the turmoil? Some people said: It is we who heard it. Upon this be remarked: Perhaps by turmoil you presume the unrest of man in regard to his household or neighbour, they replied: Yes. He ('Umar) observed: Such (an unrest) would be done away with by prayer, fasting and charity. But who amongst you has heard from the Apostle (may peace be upon him) describing that turmoil which would come like the wave of the ocean. Hudhaifa said: The people hushed into silence, I replied: It is I. He ('Umar) said: Ye, well, your father was also very pious. Hudhaifa said: I heard the Messenger of Allah (may peace be, upon him ) observing: Temptations will be presented to men's hearts as reed mat is woven stick by stick and any heart which is impregnated by them will have a black mark put into it, but any heart which rejects them will have a white mark put in it. The result is that there will become two types of hearts: one white like a white stone which will not be harmed by any turmoil or temptation, so long as the heavens and the earth endure; and the other black and dust-coloured like a vessel which is upset, not recognizing what is good or rejecting what is abominable, but being impregnated with passion. Hudhaifa said: I narrated to him ('Umar): There is between you and that (turmoil) a closed door, but there is every likelihood of its being broken. 'Umar said: Would it be broken? You have, been rendered fatherless. Had it been opened, it would have been perhaps closed also. I said: No, it would be broken, and I narrated to him: Verily that door implies a person who would be killed or die. There is no mistake in this hadith. Abu Khalid narrated: I said to Sa'd, O Abu Malik, what do you mean by the term" Aswad Murbadda"? He replied: High degree of whiteness in blackness. I said: What is meant by" Alkoozu Mujakhiyyan"? He replied: A vessel turned upside down.

He told that he heard God's messenger say, "Temptations will be presented to men's hearts as a reed mat is woven stick by stick, and any heart which is impregnated by them will have a black mark put in it, but any heart which rejects, them will have a white mark put in it. The result is that hearts will be of two kinds, one white like a white stone which will not be harmed by temptation as long as the heavens and the earth endure, and the other black and dust-colored like a vessel which is upset, not recognizing what is reputable or rejecting what is disreputable, but being impregnated with its passion." Muslim transmitted it.

It was narrated from Al-Mughirah Ibn Shu'bah that the Messenger of Allah ﷺ wiped upon the two cloth socks and the two sandals. الْمُغِيرَةِ بْنِ شُعْبَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم مَسَحَ عَلَى الْجَوْرَبَيْنِ وَالنَّعْلَيْنِ ‏.‏ قَالَ أَبُو عَبْدِ الرَّحْمَنِ مَا نَعْلَمُ أَحَدًا تَابَعَ أَبَا قَيْسٍ عَلَى هَذِهِ الرِّوَايَةِ وَالصَّحِيحُ عَنِ الْمُغِيرَةِ أَنَّ النَّبِيَّ صلى الله عليه وسلم مَسَحَ عَلَى الْخُفَّيْنِ ‏.‏

“The Messenger of Allah (SAW) sent me to Yemen. I said: 'O Messenger of Allah, you are sending me to judge between them while I am a young man, and I do not know how to judge.' He struck me on the chest with his hand and said: 'O Allah, guide his heart and make his tongue steadfast.' And after that I never doubted in passing judgment between two people.”

The Messenger of Allah (ﷺ) sent me to Yemen. I said: O Messenger of Allah, you are sending me to people who are older than me, and I am young and do not know how to judge. He put his hand on my chest and said: `O Allah, make his tongue steadfast and guide his heart. O Ali, when two disputants sit before you, do not judge between them until you listen to the second one as you listened to the first. If you do that, the verdict will become clear to you.” ‘Ali said: I never got confused about any judgement after that or doubted a verdict after that.

The Messenger of Allah (may peace be upon him) narrated to us two ahadith. I have seen one (crystallized into reality), and I am waiting for the other. He told us: Trustworthiness descended in the innermost (root) of the hearts of people. Then the Qur'an was revealed and they learnt from the Qur'an and they learnt from the Sunnah. Then he (the Holy Prophet) told us about the removal of trustworthiness. He said: The man would have a wink of sleep and trustworthiness would be taken away from his heart leaving the impression of a faint mark. He would again sleep and trustworthiness would be taken away from his heart leaving an impression of a blister, as if you rolled down an ember on your foot and it was vesicled. He would see a swelling having nothing in it. He (the Holy Prophet) then took up a pebble and rolled it down over his foot and (said): The people would enter into transactions amongst one another and hardly a person would be left who would return (things) entrusted to him. (And there would be so much paucity of honest persons) till it would be said: There in such a such tribe is a trustworthy man. And they would also say about a person: How prudent he is, how broad-minded he is and how intelligent he is, whereas in his heart there would not be faith even to the weight of a mustard seed. I have passed through a time in which I did not care with whom amongst you I entered into a transaction, for if he were a Muslim his faith would compel him to discharge his obligations to me and it he were a Christian or a Jew, the ruler would compel him to discharge his obligations to me. But today I would not enter into a transaction with you except so and so.