Sura al-Baqara 2:27

ٱلَّذِينَ يَنقُضُونَ عَهْدَ ٱللَّـهِ مِنۢ بَعْدِ مِيثَٰقِهِۦ وَيَقْطَعُونَ مَآ أَمَرَ ٱللَّـهُ بِهِۦٓ أَن يُوصَلَ وَيُفْسِدُونَ فِى ٱلْأَرْضِ أُو۟لَٰٓئِكَ هُمُ ٱلْخَٰسِرُونَ

lladhīna yanquḍūna ʿahda allāhi min baʿdi mīthāqihi wa-yaqṭaʿūna mā amara allāhu bihi an yūṣala wa-yufsidūna fī l-arḍi ulāʾika humu l-khāsirūna

Those who break Allah's Covenant after it is ratified, and who sunder what Allah Has ordered to be joined, and do mischief on earth: These cause loss (only) to themselves.

Sura al-Anfāl 8:56

ٱلَّذِينَ عَٰهَدتَّ مِنْهُمْ ثُمَّ يَنقُضُونَ عَهْدَهُمْ فِى كُلِّ مَرَّةٍ وَهُمْ لَا يَتَّقُونَ

lladhīna ʿāhadtta minhum thumma yanquḍūna ʿahdahum fī kulli marratin wa-hum lā yattaqūna

They are those with whom thou didst make a covenant, but they break their covenant every time, and they have not the fear (of Allah).

Sura al-Raʿd 13:20

ٱلَّذِينَ يُوفُونَ بِعَهْدِ ٱللَّـهِ وَلَا يَنقُضُونَ ٱلْمِيثَٰقَ

lladhīna yūfūna biʿahdi allāhi wa-lā yanquḍūna l-mīthāqa

Those who fulfil the covenant of Allah and fail not in their plighted word;

Sura al-Raʿd 13:25

وَٱلَّذِينَ يَنقُضُونَ عَهْدَ ٱللَّـهِ مِنۢ بَعْدِ مِيثَٰقِهِۦ وَيَقْطَعُونَ مَآ أَمَرَ ٱللَّـهُ بِهِۦٓ أَن يُوصَلَ وَيُفْسِدُونَ فِى ٱلْأَرْضِ أُو۟لَٰٓئِكَ لَهُمُ ٱللَّعْنَةُ وَلَهُمْ سُوٓءُ ٱلدَّارِ

wa-lladhīna yanquḍūna ʿahda allāhi min baʿdi mīthāqihi wa-yaqṭaʿūna mā amara allāhu bihi an yūṣala wa-yufsidūna fī l-arḍi ulāʾika lahumu l-laʿnatu wa-lahum sūu l-dāri

But those who break the Covenant of Allah, after having plighted their word thereto, and cut asunder those things which Allah has commanded to be joined, and work mischief in the land;- on them is the curse; for them is the terrible home!

Sura al-Naḥl 16:91

وَأَوْفُوا۟ بِعَهْدِ ٱللَّـهِ إِذَا عَٰهَدتُّمْ وَلَا تَنقُضُوا۟ ٱلْأَيْمَٰنَ بَعْدَ تَوْكِيدِهَا وَقَدْ جَعَلْتُمُ ٱللَّـهَ عَلَيْكُمْ كَفِيلًا إِنَّ ٱللَّـهَ يَعْلَمُ مَا تَفْعَلُونَ

wa-awfū biʿahdi allāhi idhā ʿāhadttum wa-lā tanquḍū l-aymāna baʿda tawkīdihā wa-qad jaʿaltumu allāha ʿalaykum kafīlan inna allāha yaʿlamu mā tafʿalūna

Fulfil the Covenant of Allah when ye have entered into it, and break not your oaths after ye have confirmed them; indeed ye have made Allah your surety; for Allah knoweth all that ye do.

Sura al-Naḥl 16:92

وَلَا تَكُونُوا۟ كَٱلَّتِى نَقَضَتْ غَزْلَهَا مِنۢ بَعْدِ قُوَّةٍ أَنكَٰثًا تَتَّخِذُونَ أَيْمَٰنَكُمْ دَخَلًۢا بَيْنَكُمْ أَن تَكُونَ أُمَّةٌ هِىَ أَرْبَىٰ مِنْ أُمَّةٍ إِنَّمَا يَبْلُوكُمُ ٱللَّـهُ بِهِۦ وَلَيُبَيِّنَنَّ لَكُمْ يَوْمَ ٱلْقِيَٰمَةِ مَا كُنتُمْ فِيهِ تَخْتَلِفُونَ

wa-lā takūnū ka-llatī naqaḍat ghazlahā min baʿdi quwwatin ankāthan tattakhidhūna aymānakum dakhalan baynakum an takūna ummatun hiya arba min ummatin innamā yablūkumu allāhu bihi wa-layubayyinanna la-kum yawma l-qiyāmati mā kuntum fīhi takhtalifūna

And be not like a woman who breaks into untwisted strands the yarn which she has spun, after it has become strong. Nor take your oaths to practise deception between yourselves, lest one party should be more numerous than another: for Allah will test you by this; and on the Day of Judgment He will certainly make clear to you (the truth of) that wherein ye disagree.