Sahih Muslim #6591 · The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship

Sahih MuslimAbu Huraira reported Allah's Messenger
Sahih Muslim · Book 45 · The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
Sahih Muslim · كتاب 45 · كتاب البر والصلة والآداب
When two persons indulge in hurling (abuses) upon one another, it would be the first one who would be the sinner so long as the oppressed does not transgress the limits.
حَدَّثَنَا يَحْيَى بْنُ أَيُّوبَ، وَقُتَيْبَةُ، وَابْنُ، حُجْرٍ قَالُوا حَدَّثَنَا إِسْمَاعِيلُ، - يَعْنُونَ ابْنَ جَعْفَرٍ - عَنِ الْعَلاَءِ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏
"‏ الْمُسْتَبَّانِ مَا قَالاَ فَعَلَى الْبَادِئِ مَا لَمْ يَعْتَدِ الْمَظْلُومُ ‏"‏ ‏.‏
Reference : Sahih Muslim 6591In-book reference : Book 45, Hadith 89