Mishkat al-Masabih 30 Fine Qualities كتاب المناقب 109

وَعَنِ ابْنِ عُمَرَ قَالَ: آخَى رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ بَيْنَ أَصْحَابِهِ فَجَاءَ عَلِيٌّ تَدْمَعُ عَيْنَاهُ فَقَالَ: آخَيْتَ بَيْنَ أَصْحَابِكَ وَلم تُؤاخِ بَيْنِي وَبَيْنَ أُحُدٍ. فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَنْتَ أَخِي فِي الدُّنْيَا وَالْآخِرَةِ» . رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ

Ibn `Umar told that when God’s messenger arranged brotherhoods among his companions `Ali came weeping and said, `You have arranged brotherhoods among your companions, but you have arranged no brotherhood between me and anyone.” He replied, “You are my brother in this world and the next.” Tirmidhi transmitted it, saying this is a hasan gharib tradition.