• سِّنّ
• سُنَّة
• سُنَّةنَا
• مَّسْنُون

Appears 15 times in the Quran.

1. 3:137 قَدْ خَلَتْ مِن قَبْلِكُمْ سُنَنٌ فَسِيرُوا۟ فِى ٱلْأَرْضِ فَٱنظُرُوا۟ كَيْفَ كَانَ عَٰقِبَةُ ٱلْمُكَذِّبِينَ

   Indeed there have been examples before you; therefore travel in the earth and see what was the end of the rejecters.
   

2. 4:26 يُرِيدُ ٱللَّهُ لِيُبَيِّنَ لَكُمْ وَيَهْدِيَكُمْ سُنَنَ ٱلَّذِينَ مِن قَبْلِكُمْ وَيَتُوبَ عَلَيْكُمْ وَٱللَّهُ عَلِيمٌ حَكِيمٌ

   Allah desires to explain to you, and to guide you into the ways of those before you, and to turn to you (mercifully), and Allah is Knowing, Wise.
   

3. 5:45 وَكَتَبْنَا عَلَيْهِمْ فِيهَآ أَنَّ ٱلنَّفْسَ بِٱلنَّفْسِ وَٱلْعَيْنَ بِٱلْعَيْنِ وَٱلْأَنفَ بِٱلْأَنفِ وَٱلْأُذُنَ بِٱلْأُذُنِ وَٱلسِّنَّ بِٱلسِّنِّ وَٱلْجُرُوحَ قِصَاصٌ فَمَن تَصَدَّقَ بِهِۦ فَهُوَ كَفَّارَةٌ لَّهُۥ وَمَن لَّمْ يَحْكُم بِمَآ أَنزَلَ ٱللَّهُ فَأُو۟لَٰٓئِكَ هُمُ ٱلظَّٰلِمُونَ

   And We prescribed to them in it that life is for life, and eye for eye, and nose for nose, and ear for ear, and tooth for tooth, and (that there is) reprisal in wounds; but he who foregoes it, it shall be an expiation for him; and whoever did not judge by what Allah revealed, those are they that are the unjust.
   

4. 8:38 قُل لِّلَّذِينَ كَفَرُوٓا۟ إِن يَنتَهُوا۟ يُغْفَرْ لَهُم مَّا قَدْ سَلَفَ وَإِن يَعُودُوا۟ فَقَدْ مَضَتْ سُنَّتُ ٱلْأَوَّلِينَ

   Say to those who disbelieve, if they desist, that which is past shall be forgiven to them; and if they return, then what happened to the ancients has already passed.
   

5. 15:13 لَا يُؤْمِنُونَ بِهِۦ وَقَدْ خَلَتْ سُنَّةُ ٱلْأَوَّلِينَ

   They do not believe in it, and indeed the example of the former people has already passed.
   

6. 15:26 وَلَقَدْ خَلَقْنَا ٱلْإِنسَٰنَ مِن صَلْصَٰلٍ مِّنْ حَمَإٍ مَّسْنُونٍ

   And certainly We created man of clay that gives forth sound, of black mud fashioned in shape.
   

7. 15:28 وَإِذْ قَالَ رَبُّكَ لِلْمَلَٰٓئِكَةِ إِنِّى خَٰلِقٌۢ بَشَرًا مِّن صَلْصَٰلٍ مِّنْ حَمَإٍ مَّسْنُونٍ

   And when your Lord said to the angels: Surely I am going to create a mortal of the essence of black mud fashioned in shape.
   

8. 15:33 قَالَ لَمْ أَكُن لِّأَسْجُدَ لِبَشَرٍ خَلَقْتَهُۥ مِن صَلْصَٰلٍ مِّنْ حَمَإٍ مَّسْنُونٍ

   He said: I am not such that I should make obeisance to a mortal whom Thou hast created of the essence of black mud fashioned in shape.
   

9. 17:77 سُنَّةَ مَن قَدْ أَرْسَلْنَا قَبْلَكَ مِن رُّسُلِنَا وَلَا تَجِدُ لِسُنَّتِنَا تَحْوِيلًا

   (This is Our) course with regard to those of Our messengers whom We sent before you, and you shall not find a change in Our course.
   

10. 18:55 وَمَا مَنَعَ ٱلنَّاسَ أَن يُؤْمِنُوٓا۟ إِذْ جَآءَهُمُ ٱلْهُدَىٰ وَيَسْتَغْفِرُوا۟ رَبَّهُمْ إِلَّآ أَن تَأْتِيَهُمْ سُنَّةُ ٱلْأَوَّلِينَ أَوْ يَأْتِيَهُمُ ٱلْعَذَابُ قُبُلًا

    And nothing prevents men from believing when the guidance comes to them, and from asking forgiveness of their Lord, except that what happened to the ancients should overtake them, or that the chastisement should come face to face with them.
    

11. 33:38 مَّا كَانَ عَلَى ٱلنَّبِىِّ مِنْ حَرَجٍ فِيمَا فَرَضَ ٱللَّهُ لَهُۥ سُنَّةَ ٱللَّهِ فِى ٱلَّذِينَ خَلَوْا۟ مِن قَبْلُ وَكَانَ أَمْرُ ٱللَّهِ قَدَرًا مَّقْدُورًا

    There is no harm in the Prophet doing that which Allah has ordained for him; such has been the course of Allah with respect to those who have gone before; and the command of Allah is a decree that is made absolute:
    

12. 33:62 سُنَّةَ ٱللَّهِ فِى ٱلَّذِينَ خَلَوْا۟ مِن قَبْلُ وَلَن تَجِدَ لِسُنَّةِ ٱللَّهِ تَبْدِيلًا

    (Such has been) the course of Allah with respect to those who have gone before; and you shall not find any change in the course of Allah.
    

13. 35:43 ٱسْتِكْبَارًا فِى ٱلْأَرْضِ وَمَكْرَ ٱلسَّيِّئِ وَلَا يَحِيقُ ٱلْمَكْرُ ٱلسَّيِّئُ إِلَّا بِأَهْلِهِۦ فَهَلْ يَنظُرُونَ إِلَّا سُنَّتَ ٱلْأَوَّلِينَ فَلَن تَجِدَ لِسُنَّتِ ٱللَّهِ تَبْدِيلًا وَلَن تَجِدَ لِسُنَّتِ ٱللَّهِ تَحْوِيلًا

    (In) behaving proudly in the land and in planning evil; and the evil plans shall not beset any save the authors of it. Then should they wait for aught except the way of the former people? For you shall not find any alteration in the course of Allah; and you shall not find any change in the course of Allah.
    

14. 40:85 فَلَمْ يَكُ يَنفَعُهُمْ إِيمَٰنُهُمْ لَمَّا رَأَوْا۟ بَأْسَنَا سُنَّتَ ٱللَّهِ ٱلَّتِى قَدْ خَلَتْ فِى عِبَادِهِۦ وَخَسِرَ هُنَالِكَ ٱلْكَٰفِرُونَ

    But their belief was not going to profit them when they had seen Our punishment; (this is) Allah's law, which has indeed obtained in the matter of His servants, and there the unbelievers are lost.
    

15. 48:23 سُنَّةَ ٱللَّهِ ٱلَّتِى قَدْ خَلَتْ مِن قَبْلُ وَلَن تَجِدَ لِسُنَّةِ ٱللَّهِ تَبْدِيلًا

    Such has been the course of Allah that has indeed run before, and you shall not find a change in Allah's course.