The Book of Virtue, Enjoining Good Manners, and Joining of the Ties of Kinship
حَدَّثَنَا شَيْبَانُ بْنُ فَرُّوخَ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " إِذَا قَاتَلَ أَحَدُكُمْ أَخَاهُ فَلْيَتَّقِ الْوَجْهَ " .Abu Huraira reported Allah's Apostle (ﷺ) as saying:When any one of you fights with his brother, he should spare his face
From Sahih Muslim, whose reports the scholars accept as authentic.