43:50
فَ لَمَّا كَشَفْ نَا عَنْ هُمُ ٱلْ عَذَابَ إِذَا هُمْ يَنكُثُ ونَ
But when We removed from them the affliction, at once they broke their word.
48:10
إِنَّ ٱلَّذِينَ يُبَايِعُ ونَ كَ إِنَّ مَا يُبَايِعُ ونَ ٱللَّهَ يَدُ ٱللَّهِ فَوْقَ أَيْدِي هِمْ فَ مَن نَّكَثَ فَ إِنَّ مَا يَنكُثُ عَلَىٰ نَفْسِ هِۦ وَ مَنْ أَوْفَىٰ بِ مَا عَٰهَدَ عَلَيْ هُ ٱللَّهَ فَ سَ يُؤْتِي هِ أَجْرًا عَظِيمًا
Indeed, those who pledge allegiance to you, [O Muhammad] - they are actually pledging allegiance to Allah. The hand of Allah is over their hands. So he who breaks his word only breaks it to the detriment of himself. And he who fulfills that which he has promised Allah - He will give him a great reward.
7:135
فَ لَمَّا كَشَفْ نَا عَنْ هُمُ ٱل رِّجْزَ إِلَىٰٓ أَجَلٍ هُم بَٰلِغُو هُ إِذَا هُمْ يَنكُثُ ونَ
But when We removed the punishment from them until a term which they were to reach, then at once they broke their word.
9:12
وَ إِن نَّكَثُ وٓا۟ أَيْمَٰنَ هُم مِّنۢ بَعْدِ عَهْدِ هِمْ وَ طَعَنُ وا۟ فِى دِينِ كُمْ فَ قَٰتِلُ وٓا۟ أَئِمَّةَ ٱلْ كُفْرِ إِنَّ هُمْ لَآ أَيْمَٰنَ لَ هُمْ لَعَلَّ هُمْ يَنتَهُ ونَ
And if they break their oaths after their treaty and defame your religion, then fight the leaders of disbelief, for indeed, there are no oaths [sacred] to them; [fight them that] they might cease.
9:13
أَ لَا تُقَٰتِلُ ونَ قَوْمًا نَّكَثُ وٓا۟ أَيْمَٰنَ هُمْ وَ هَمُّ وا۟ بِ إِخْرَاجِ ٱل رَّسُولِ وَ هُم بَدَءُ و كُمْ أَوَّلَ مَرَّةٍ أَ تَخْشَ وْنَ هُمْ فَ ٱللَّهُ أَحَقُّ أَن تَخْشَ وْ هُ إِن كُن تُم مُّؤْمِنِينَ
Would you not fight a people who broke their oaths and determined to expel the Messenger, and they had begun [the attack upon] you the first time? Do you fear them? But Allah has more right that you should fear Him, if you are [truly] believers.