الْأَدَبُ الْمُفْرَدُ
Al-Adab al-Mufrad 426
Disparaging
When two people revile one another, the responsibility
وَقَالَ النَّبِيُّ صلى الله عليه وسلم: إِنَّ اللَّهَ عَزَّ وَجَلَّ أَوْحَى إِلَيَّ أَنْ تَوَاضَعُوا، وَلاَ يَبْغِ بَعْضُكُمْ عَلَى بَعْضٍ.
The Prophet, (ﷺ), said, "Allah Almighty revealed to me that you should be humble and that you should not wrong one another."
Al-Adab Al-Mufrad, 426Sahih (Al-Albani)صـحـيـح (الألباني)