The Quran root ل ع ن l-ʿ-n

وَقَالُوا قُلُوبُنَا غُلْفٌ بَل لَّعَنَهُمُ اللَّهُ بِكُفْرِهِمْ فَقَلِيلًا مَّا يُؤْمِنُونَ ٨٨

لَّعَنَهُمُ laʿanahumu · has cursed them

And they said, "Our hearts are wrapped." But, [in fact], Allāh has cursed them for their disbelief, so little is it that they believe. (Surah Al-Baqarah, 2:88)

إِنَّ الَّذِينَ يَكْتُمُونَ مَا أَنزَلْنَا مِنَ الْبَيِّنَاتِ وَالْهُدَىٰ مِن بَعْدِ مَا بَيَّنَّاهُ لِلنَّاسِ فِي الْكِتَابِ أُولَٰئِكَ يَلْعَنُهُمُ اللَّهُ وَيَلْعَنُهُمُ اللَّاعِنُونَ ١٥٩

يَلْعَنُهُمُ yalʿanuhumu · curses them

Indeed, those who conceal what We sent down of clear proofs and guidance after We made it clear for the people in the Scripture - those are cursed by Allāh and cursed by those who curse, (Surah Al-Baqarah, 2:159)

وَلَمَّا جَاءَهُمْ كِتَابٌ مِّنْ عِندِ اللَّهِ مُصَدِّقٌ لِّمَا مَعَهُمْ وَكَانُوا مِن قَبْلُ يَسْتَفْتِحُونَ عَلَى الَّذِينَ كَفَرُوا فَلَمَّا جَاءَهُم مَّا عَرَفُوا كَفَرُوا بِهِ فَلَعْنَةُ اللَّهِ عَلَى الْكَافِرِينَ ٨٩

فَلَعْنَةُ falaʿnatu · So (the) curse

And when there came to them a Book [i.e., the Qur’ān] from Allāh confirming that which was with them - although before they used to pray for victory against those who disbelieved - but [then] when there came to them that which they recognized, they disbelieved in it; so the curse of Allāh will be upon the disbelievers. (Surah Al-Baqarah, 2:89)

وَإِذْ قُلْنَا لَكَ إِنَّ رَبَّكَ أَحَاطَ بِالنَّاسِ وَمَا جَعَلْنَا الرُّؤْيَا الَّتِي أَرَيْنَاكَ إِلَّا فِتْنَةً لِّلنَّاسِ وَالشَّجَرَةَ الْمَلْعُونَةَ فِي الْقُرْآنِ وَنُخَوِّفُهُمْ فَمَا يَزِيدُهُمْ إِلَّا طُغْيَانًا كَبِيرًا ٦٠

الْمَلْعُونَةَ l-malʿūnata · the accursed

And [remember, O Muḥammad], when We told you, "Indeed, your Lord has encompassed the people." And We did not make the sight which We showed you except as a trial for the people, as was the accursed tree [mentioned] in the Qur’ān. And We threaten [i.e., warn] them, but it increases them not except in great transgression. (Surah Al-Isra, 17:60)

مَّلْعُونِينَ أَيْنَمَا ثُقِفُوا أُخِذُوا وَقُتِّلُوا تَقْتِيلًا ٦١

مَّلْعُونِينَ malʿūnīna · Accursed

Accursed wherever they are found, [being] seized and massacred completely. (Surah Al-Ahzab, 33:61)