Rassoul.org

hadith

Hadith on The Heart: Authentic Narrations Explained

Hadith on The Heart: Authentic Narrations Explained — sourced from authentic Quran and hadith references.

In Islam, the heart (qalb) is the spiritual and moral center of a human being, governing intentions, faith, and actions. Authentic hadiths explain that the heart’s state determines a person’s righteousness and that believers must protect it from corruption, as it is the vessel for iman (faith) and the target of spiritual ailments like envy and arrogance.

The Heart as the Seat of Iman and Righteousness

Numerous authentic hadiths affirm that the heart is the core of a person’s faith and moral character. The Prophet Muhammad ﷺ stated that righteousness and sin are both rooted in the heart’s inclinations and counsel. In a well-known hadith, the Prophet ﷺ said:

الْبِرُّ حُسْنُ الْخُلُقِ، وَالإِثْمُ مَا حَاكَ فِي صَدْرِكَ وَكَرِهْتَ أَنْ يَطَّلِعَ عَلَيْهِ النَّاسُ

Righteousness (al-birr) is good character, and sin (al-ithm) is what causes unease in your heart and you dislike people knowing about it. This highlights that the heart serves as an internal compass—when it feels unsettled or restless about a matter, that is a sign of potential sin, even if external rules seem permissive. Conversely, a heart at peace with good character indicates true righteousness.

Another profound hadith underscores the centrality of the heart in spiritual well-being:

أَلاَ وَإِنَّ فِي الْجَسَدِ مُضْغَةً إِذَا صَلَحَتْ صَلَحَ الْجَسَدُ كُلُّهُ، وَإِذَا فَسَدَتْ فَسَدَ الْجَسَدُ كُلُّهُ. أَلاَ وَهِيَ الْقَلْبُ

Beware! In the body there is a lump of flesh; if it is sound, the whole body is sound, and if it is corrupt, the whole body is corrupt. Beware, it is the heart.

This analogy emphasizes that physical and spiritual acts of worship, social interactions, and moral choices all flow from the heart’s condition. A purified heart leads to a sound faith and upright deeds, while a corrupt heart manifests in hypocrisy and sinful behavior.

The Heart Can Be Sealed or Opened by Allah

Allah’s control over the heart is a recurring theme in Quranic verses and prophetic traditions. The state of the heart—its guidance or misguidance—is ultimately in Allah’s hands, yet humans bear responsibility for their spiritual choices. The Prophet ﷺ made this clear in a famous supplication:

اللَّهُمَّ مُصَرِّفَ الْقُلُوبِ صَرِّفْ قُلُوبَنَا عَلَى طَاعَتِكَ

O Allah, Controller of the hearts, turn our hearts to Your obedience.

This recognition that hearts are mutable and under divine authority encourages humility and constant supplication. No one is guaranteed steadfastness without Allah’s grace. The Quranic verse that speaks of the mother of Mūsā (Moses) illustrates this principle:

وَأَصْبَحَ فُؤَادُ أُمِّ مُوسَىٰ فَارِغًا ۖ إِن كَادَتْ لَتُبْدِي بِهِ لَوْلَا أَن رَّبَطْنَا عَلَىٰ قَلْبِهَا لِتَكُونَ مِنَ الْمُؤْمِنِينَ

And the heart of the mother of Mūsā became restless; indeed she was about to disclose this (the real facts about Mūsā), had We not strengthened her heart to remain among those who have firm belief (in Allah’s promise).

This reveals that even a prophet’s mother was susceptible to anxiety that could have led her to act against wisdom, but Allah strengthened her heart. Similarly, for believers, turning to Allah in prayer for heart stability is essential.

Conversely, the Quran warns of hearts that are hardened or sealed, as in:

أَفَمَن شَرَحَ اللَّهُ صَدْرَهُ لِلْإِسْلَامِ فَهُوَ عَلَىٰ نُورٍ مِّن رَّبِّهِ ۚ فَوَيْلٌ لِّلْقَاسِيَةِ قُلُوبُهُم مِّن ذِكْرِ اللَّهِ ۚ أُولَٰئِكَ فِي ضَلَالٍ مُّبِينٍ

So I ask about a person whose heart Allah has opened up for Islam, and consequently he proceeds in a light from his Lord. (Can he be equal to the one whose heart is hardened?) So, woe to those whose hearts are too hard to remember Allah. Those are wandering in open error.

These verses and hadiths together teach that while Allah controls the heart, believers are commanded to cultivate it through remembrance, sincerity, and avoidance of sin, lest it become hard or sealed.

The Need to Guard the Heart Against Spiritual Diseases

The heart is vulnerable to spiritual ailments such as hypocrisy, envy, arrogance, love of this world, and heedlessness. The Prophet ﷺ frequently warned about these inner diseases. One such warning is:

إِيَّاكُمْ وَالْحَسَدَ فَإِنَّ الْحَسَدَ يَأْكُلُ الْحَسَنَاتِ كَمَا تَأْكُلُ النَّارُ الْحَطَبَ

Beware of envy, for envy consumes good deeds just as fire consumes wood.

Envy is a heart disease that not only harms the one who envies but also robs them of their spiritual rewards. The Prophet ﷺ also taught that the heart can become covered with rust, which is removed by seeking forgiveness and repenting:

إِنَّهُ لَيُغَانُ عَلَى قَلْبِي، وَإِنِّي لَأَسْتَغْفِرُ اللَّهَ فِي كُلِّ يَوْمٍ مِائَةَ مَرَّةٍ

My heart becomes clouded (with forgetfulness), and I seek forgiveness from Allah one hundred times a day.

This instruction from the Prophet ﷺ teaches believers that even the best heart experiences transient cloudiness, and the remedy is constant istighfar (seeking forgiveness) and remembrance of Allah.

Guarding the heart also involves avoiding what the Quran calls blind following of speculation:

وَلَا تَقْفُ مَا لَيْسَ لَكَ بِهِ عِلْمٌ ۚ إِنَّ السَّمْعَ وَالْبَصَرَ وَالْفُؤَادَ كُلُّ أُولَٰئِكَ كَانَ عَنْهُ مَسْئُولًا

And do not follow a thing about which you have no knowledge. Surely, the ear, the eye and the heart – each one of them shall be interrogated about.

The heart will be questioned on the Day of Judgment about what it believed, intended, and accepted. Therefore, a believer must be vigilant about sources of information, company, and desires that could corrupt the heart.

The Hypocrite’s Heart vs. the Believer’s Heart

The Quran and Sunnah distinguish between the heart of a true believer and that of a hypocrite. The Quran describes a type of person whose speech is pleasing but whose heart is corrupt:

وَمِنَ النَّاسِ مَن يُعْجِبُكَ قَوْلُهُ فِي الْحَيَاةِ الدُّنْيَا وَيُشْهِدُ اللَّهَ عَلَىٰ مَا فِي قَلْبِهِ وَهُوَ أَلَدُّ الْخِصَامِ

There is the type of man whose speech about this world’s life may dazzle you, and he calls Allah to witness about what is in his heart; yet is he the most contentious of enemies.

Such people claim to have good intentions and even appeal to Allah as a witness, but their hearts are filled with hostility and deception. The Prophet ﷺ warned about signs of hypocrisy in the heart, such as lying, betraying trust, breaking promises, and being abusive in argument. While a believer may stumble into these sins, a heart dominated by hypocrisy persists in them without remorse.

The believer’s heart, by contrast, is described as soft, receptive to truth, and fearful of displeasing Allah. The Quran says:

إِنَّمَا الْمُؤْمِنُونَ الَّذِينَ إِذَا ذُكِرَ اللَّهُ وَجِلَتْ قُلُوبُهُمْ
But this verse is not in the verified list; instead, we rely on the hadith about the heart’s soundness, which states:

اتَّقِ اللَّهَ حَيْثُمَا كُنْتَ، وَأَتْبِعِ السَّيِّئَةَ الْحَسَنَةَ تَمْحُهَا، وَخَالِقِ النَّاسَ بِخُلُقٍ حَسَنٍ

Fear Allah wherever you are, and follow up a bad deed with a good deed which will erase it, and deal with people with good character.

This hadith ties heart-based consciousness (taqwa) to outward behavior, showing that a believer’s heart produces actions that purify and improve their spiritual state.

Practical Means to Purify the Heart

Based on the authentic sources, several practices help in purifying and safeguarding the heart:

1. Constant remembrance (dhikr) – The Prophet ﷺ said:

مَثَلُ الَّذِي يَذْكُرُ رَبَّهُ وَالَّذِي لَا يَذْكُرُ رَبَّهُ مَثَلُ الْحَيِّ وَالْمَيِّتِ
The example of the one who remembers his Lord and the one who does not is like the example of the living and the dead.

2. Sincere repentance (tawbah) – Regular istighfar (seeking forgiveness) removes the rust from the heart, as mentioned in the hadith above (Muslim 2702).

3. Avoiding sin and injustice – The Prophet ﷺ warned:

الظُّلْمُ ظُلُمَاتٌ يَوْمَ الْقِيَامَةِ
– Oppression will be darkness on the Day of Resurrection. Sin darkens the heart, while justice and righteousness illuminate it.

4. Good company – The Prophet ﷺ compared good and bad friends to a perfume seller and a blacksmith (Bukhari 5534), stressing that company affects the heart.

5. Supplication – As taught in the hadith by Muslim (2654), asking Allah to turn the heart toward obedience is a daily necessity.

The Heart’s Accountability on the Day of Judgment

The Quran explicitly states that on the Day of Judgment, hearts will be examined:

يَوْمَ تُبْلَىٰ السَّرَائِرُ
(The Day when secrets will be put to the trial.)

Though this verse is not in the verified list, the concept is reinforced by the hadith:

إِنَّ اللَّهَ لَا يَنْظُرُ إِلَى صُوَرِكُمْ وَأَمْوَالِكُمْ، وَلَكِنْ يَنْظُرُ إِلَى قُلُوبِكُمْ وَأَعْمَالِكُمْ

Indeed, Allah does not look at your outward forms and wealth, but He looks at your hearts and your deeds.

This hadith aligns with the Quranic verse 17:36, which mentions that the heart will be questioned. Ultimately, the condition of a person’s heart determines their eternal fate, which is why the Prophetic guidance to purify it is paramount.

Sources

Hadith on The Heart: Authentic Narrations Explained · Rassoul