Backbiting (Namimah) in the Holy Quran

﴿۞ يَٰٓأَيُّهَا ٱلرَّسُولُ لَا يَحۡزُنكَ ٱلَّذِينَ يُسَٰرِعُونَ فِي ٱلۡكُفۡرِ مِنَ ٱلَّذِينَ قَالُوٓاْ ءَامَنَّا بِأَفۡوَٰهِهِمۡ وَلَمۡ تُؤۡمِن قُلُوبُهُمۡۛ وَمِنَ ٱلَّذِينَ هَادُواْۛ سَمَّٰعُونَ لِلۡكَذِبِ سَمَّٰعُونَ لِقَوۡمٍ ءَاخَرِينَ لَمۡ يَأۡتُوكَۖ يُحَرِّفُونَ ٱلۡكَلِمَ مِنۢ بَعۡدِ مَوَاضِعِهِۦۖ يَقُولُونَ إِنۡ أُوتِيتُمۡ هَٰذَا فَخُذُوهُ وَإِن لَّمۡ تُؤۡتَوۡهُ فَٱحۡذَرُواْۚ وَمَن يُرِدِ ٱللَّهُ فِتۡنَتَهُۥ فَلَن تَمۡلِكَ لَهُۥ مِنَ ٱللَّهِ شَيۡـًٔاۚ أُوْلَٰٓئِكَ ٱلَّذِينَ لَمۡ يُرِدِ ٱللَّهُ أَن يُطَهِّرَ قُلُوبَهُمۡۚ لَهُمۡ فِي ٱلدُّنۡيَا خِزۡيٞۖ وَلَهُمۡ فِي ٱلۡأٓخِرَةِ عَذَابٌ عَظِيمٞ ﴾ [Al-Mā’idah: 41]

(41) O Messenger, let them not grieve you who hasten into disbelief of those who say, "We believe" with their mouths, but their hearts believe not, and from among the Jews. [They are] avid listeners to falsehood, listening to another people who have not come to you. They distort words beyond their [proper] usages, saying "If you are given this, take it; but if you are not given it, then beware." But he for whom Allah intends fitnah - never will you possess [power to do] for him a thing against Allah. Those are the ones for whom Allah does not intend to purify their hearts. For them in this world is disgrace, and for them in the Hereafter is a great punishment.

Surah: Al-Mā’idah - Verse: 41 - Juz: 6 - Page: 114

﴿لَوۡ خَرَجُواْ فِيكُم مَّا زَادُوكُمۡ إِلَّا خَبَالٗا وَلَأَوۡضَعُواْ خِلَٰلَكُمۡ يَبۡغُونَكُمُ ٱلۡفِتۡنَةَ وَفِيكُمۡ سَمَّٰعُونَ لَهُمۡۗ وَٱللَّهُ عَلِيمُۢ بِٱلظَّٰلِمِينَ ﴾ [At-Taubah: 47]

(47) Had they gone forth with you, they would not have increased you except in confusion, and they would have been active among you, seeking [to cause] you fitnah. And among you are avid listeners to them. And Allah is Knowing of the wrongdoers.

Surah: At-Taubah - Verse: 47 - Juz: 10 - Page: 194

﴿هَمَّازٖ مَّشَّآءِۭ بِنَمِيمٖ ﴾ [Al-Qalam: 11]

(11) [And] scorner, going about with malicious gossip -

Surah: Al-Qalam - Verse: 11 - Juz: 29 - Page: 564