Skip to content
Assabile

The root ق س و (q-s-w) in the Quran

Meaning: hardness (of heart)

7 occurrences in 6 verses and 6 surahs · 3 derived words

Every Quranic word built on this root is counted, prefixes and suffixes included (و، ب، ال…), in the Hafs reading.

Words built on this root

Surahs where it occurs most

  1. 2. Al-Baqarah2
  2. 5. Al-Ma’idah1
  3. 6. Al-An’am1
  4. 22. Al-Hajj1
  5. 39. Az-Zumar1
  6. 57. Al-Hadid1

The 6 verses

Al-Baqarah2:74

ثُمَّ قَسَتْ قُلُوبُكُم مِّنۢ بَعْدِ ذَٰلِكَ فَهِىَ كَٱلْحِجَارَةِ أَوْ أَشَدُّ قَسْوَةً وَإِنَّ مِنَ ٱلْحِجَارَةِ لَمَا يَتَفَجَّرُ مِنْهُ ٱلْأَنْهَٰرُ وَإِنَّ مِنْهَا لَمَا يَشَّقَّقُ فَيَخْرُجُ مِنْهُ ٱلْمَآءُ وَإِنَّ مِنْهَا لَمَا يَهْبِطُ مِنْ خَشْيَةِ ٱللَّهِ وَمَا ٱللَّهُ بِغَٰفِلٍ عَمَّا تَعْمَلُونَ ۝٧٤

Then your hearts became hardened after that, being like stones or even harder. For indeed, there are stones from which rivers burst forth, and there are some of them that split open and water comes out, and there are some of them that fall down for fear of Allāh. And Allāh is not unaware of what you do.

Al-Ma’idah5:13

فَبِمَا نَقْضِهِم مِّيثَٰقَهُمْ لَعَنَّٰهُمْ وَجَعَلْنَا قُلُوبَهُمْ قَٰسِيَةً يُحَرِّفُونَ ٱلْكَلِمَ عَن مَّوَاضِعِهِۦ وَنَسُوا۟ حَظًّا مِّمَّا ذُكِّرُوا۟ بِهِۦ وَلَا تَزَالُ تَطَّلِعُ عَلَىٰ خَآئِنَةٍ مِّنْهُمْ إِلَّا قَلِيلًا مِّنْهُمْ فَٱعْفُ عَنْهُمْ وَٱصْفَحْ إِنَّ ٱللَّهَ يُحِبُّ ٱلْمُحْسِنِينَ ۝١٣

So for their breaking of the covenant We cursed them and made their hearts hardened. They distort words from their [proper] places [i.e., usages] and have forgotten a portion of that of which they were reminded. And you will still observe deceit among them, except a few of them. But pardon them and overlook [their misdeeds]. Indeed, Allāh loves the doers of good.

Al-An’am6:43

فَلَوْلَآ إِذْ جَآءَهُم بَأْسُنَا تَضَرَّعُوا۟ وَلَٰكِن قَسَتْ قُلُوبُهُمْ وَزَيَّنَ لَهُمُ ٱلشَّيْطَٰنُ مَا كَانُوا۟ يَعْمَلُونَ ۝٤٣

Then why, when Our punishment came to them, did they not humble themselves? But their hearts became hardened, and Satan made attractive to them that which they were doing.

Al-Hajj22:53

لِّيَجْعَلَ مَا يُلْقِى ٱلشَّيْطَٰنُ فِتْنَةً لِّلَّذِينَ فِى قُلُوبِهِم مَّرَضٌ وَٱلْقَاسِيَةِ قُلُوبُهُمْ وَإِنَّ ٱلظَّٰلِمِينَ لَفِى شِقَاقٍۭ بَعِيدٍ ۝٥٣

[That is] so He may make what Satan throws in [i.e., asserts] a trial for those within whose hearts is disease and those hard of heart. And indeed, the wrongdoers are in extreme dissension.

Az-Zumar39:22

أَفَمَن شَرَحَ ٱللَّهُ صَدْرَهُۥ لِلْإِسْلَٰمِ فَهُوَ عَلَىٰ نُورٍ مِّن رَّبِّهِۦ فَوَيْلٌ لِّلْقَٰسِيَةِ قُلُوبُهُم مِّن ذِكْرِ ٱللَّهِ أُو۟لَٰٓئِكَ فِى ضَلَٰلٍ مُّبِينٍ ۝٢٢

So is one whose breast Allāh has expanded to [accept] Islām and he is upon [i.e., guided by] a light from his Lord [like one whose heart rejects it]? Then woe to those whose hearts are hardened against the remembrance of Allāh. Those are in manifest error.

Al-Hadid57:16

أَلَمْ يَأْنِ لِلَّذِينَ ءَامَنُوٓا۟ أَن تَخْشَعَ قُلُوبُهُمْ لِذِكْرِ ٱللَّهِ وَمَا نَزَلَ مِنَ ٱلْحَقِّ وَلَا يَكُونُوا۟ كَٱلَّذِينَ أُوتُوا۟ ٱلْكِتَٰبَ مِن قَبْلُ فَطَالَ عَلَيْهِمُ ٱلْأَمَدُ فَقَسَتْ قُلُوبُهُمْ وَكَثِيرٌ مِّنْهُمْ فَٰسِقُونَ ۝١٦

Has the time not come for those who have believed that their hearts should become humbly submissive at the remembrance of Allāh and what has come down of the truth? And let them not be like those who were given the Scripture before, and a long period passed over them, so their hearts hardened; and many of them are defiantly disobedient.

Why do the numbers differ from one website to another?

  • Some count the root (every word built on it), others a single word, others the exact form as written in the Mushaf: all three numbers are given here.
  • Prefixes and suffixes (و، ب، ال…) are taken into account; a search on the raw text may miss some, or count words from another root that are spelled the same way.
  • The counts follow the Hafs reading and the grammatical analysis of each of the 77,429 words of the Quran.

Results are ranked automatically: only texts of the Quran and translations of their meaning are shown, with no machine-written text. For a legal opinion, consult a scholar.

All roots · Search this root with filters

Friday, November 13, 2026 3 جمادى الآخرة 1448 هـ