In the Name of Allah, the Gracious, the Merciful
Imam al-Nawawi records in his book Meadows of the Righteous:
باب تحريم لعن إنسان بعينه أَوْ دابة وجواز لعن أصحاب المعاصي غير المعينين
Chapter on the prohibition of cursing a person by name, or an animal, and permission to curse sinners without naming them.
Source: Riyāḍ al-Ṣāliḥīn 1/435
Allah Almighty said:
أَلَا لَعْنَةُ اللَّهِ عَلَى الظَّالِمِينَ
Surely, Allah’s condemnation is upon the wrongdoers.
Surat Hud 11:18
And Allah said:
وَنَادَىٰ أَصْحَابُ الْجَنَّةِ أَصْحَابَ النَّارِ أَن قَدْ وَجَدْنَا مَا وَعَدَنَا رَبُّنَا حَقًّا فَهَلْ وَجَدتُّم مَّا وَعَدَ رَبُّكُمْ حَقًّا قَالُوا نَعَمْ فَأَذَّنَ مُؤَذِّنٌ بَيْنَهُمْ أَن لَّعْنَةُ اللَّهِ عَلَى الظَّالِمِينَ
The residents of Paradise will call out to the residents of the Fire, ‘We have certainly found our Lord’s promise to be true. Have you too found your Lord’s promise to be true?’ They will reply, ‘Yes, we have!’ Then a caller will announce to both, ‘May Allah’s condemnation be upon the wrongdoers!’
Surat al-A’raf 7:44
Thabit ibn al-Dahhak reported: The Messenger of Allah, peace and blessings be upon him, said:
وَلَعْنُ الْمُؤْمِنِ كَقَتْلِهِ وَمَنْ رَمَى مُؤْمِنًا بِكُفْرٍ فَهُوَ كَقَتْلِهِ
Cursing a believer is like killing him, and accusing a believer of unbelief is like killing him.
Source: Ṣaḥīḥ al-Bukhārī 6105, Grade: Muttafaqun Alayhi
Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said:
لَا يَنْبَغِي لِصِدِّيقٍ أَنْ يَكُونَ لَعَّانًا
It is not befitting the truthful that they be in the habit of cursing others.
Source: Ṣaḥīḥ Muslim 2597, Grade: Sahih
Abu Darda reported: The Messenger of Allah, peace and blessings be upon him, said:
لَا يَكُونُ اللَّعَّانُونَ شُفَعَاءَ وَلَا شُهَدَاءَ يَوْمَ الْقِيَامَةِ
Those in the habit of cursing others will not be intercessors or witnesses on the Day of Resurrection.
Source: Ṣaḥīḥ Muslim 2595, Grade: Sahih
Samurah ibn Jundab reported: The Messenger of Allah, peace and blessings be upon him, said:
لَا تَلَاعَنُوا بِلَعْنَةِ اللَّهِ وَلَا بِغَضَبِهِ وَلَا بِالنَّارِ
Do not curse each other with the curse of Allah, nor invoke His wrath, nor invoke the Hellfire.
Source: Sunan al-Tirmidhī 1976, Grade: Sahih
Abdullah ibn Mas’ud said: The Messenger of Allah, peace and blessings be upon him, said:
لَيْسَ الْمُؤْمِنُ بِالطَّعَّانِ وَلَا اللَّعَّانِ وَلَا الْفَاحِشِ وَلَا الْبَذِيءِ
The believer does not insult others, he does not curse others, he is not vulgar, and he is not shameless.
Source: Sunan al-Tirmidhī 1977, Grade: Sahih
Abu Darda reported: The Messenger of Allah, peace and blessings be upon him, said:
إِنَّ الْعَبْدَ إِذَا لَعَنَ شَيْئًا صَعِدَتْ اللَّعْنَةُ إِلَى السَّمَاءِ فَتُغْلَقُ أَبْوَابُ السَّمَاءِ دُونَهَا ثُمَّ تَهْبِطُ إِلَى الْأَرْضِ فَتُغْلَقُ أَبْوَابُهَا دُونَهَا ثُمَّ تَأْخُذُ يَمِينًا وَشِمَالًا فَإِذَا لَمْ تَجِدْ مَسَاغًا رَجَعَتْ إِلَى الَّذِي لُعِنَ فَإِنْ كَانَ لِذَلِكَ أَهْلًا وَإِلَّا رَجَعَتْ إِلَى قَائِلِهَا
Verily, when a servant curses something, the curse rises to the heaven and the gates of heaven close upon it. It turns right and left, and if it does not find a place to go, it will return to that which was cursed, only if it deserved to be cursed. Otherwise, the curse will return upon the one who made it.
Source: Sunan Abī Dāwūd 4905, Grade: Hasan
‘Imran ibn Husayn reported: We were with the Messenger of Allah, peace and blessings be upon him, during one of his journeys while a woman from the Ansar was on a camel. She disparaged it and cursed it. When the Prophet heard it, he said:
خُذُوا مَا عَلَيْهَا وَدَعُوهَا فَإِنَّهَا مَلْعُونَةٌ
Unload the camel and set it free, for it has been cursed.
Source: Ṣaḥīḥ Muslim 2595, Grade: Sahih
Abu Barzah al-Aslami reported: A young woman was riding a camel upon which were people’s luggage. When she saw the Prophet, peace and blessings be upon him, and the pass of the mountain became narrow, the woman said to the camel, “Go ahead!” When it did not move, she said, “O Allah, curse it!” The Prophet said:
لَا تُصَاحِبْنَا نَاقَةٌ عَلَيْهَا لَعْنَةٌ
A camel that has been cursed should not accompany us.
Source: Ṣaḥīḥ Muslim 2596, Grade: Sahih
Success comes from Allah, and Allah knows best.