Hadith 16:99
Abu Hurairah (RAA) narrated that the Messenger of Allah (ﷺ) said:
“Every believer is the mirror of his brother.” Related by Abu Dawud with a good chain of narrators.
وَعَنْهُ قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ اَلْمُؤْمِنُ مِرْآةُ اَلْمُؤْمِنِ } أَخْرَجَهُ أَبُو دَاوُدَ بِإِسْنَادٍ حَسَنٍ