عَنْ خَرَشَةَ بْنِ الْحَارِثِ وَكَانَ مِنْ أَصْحَابِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ لَا يَشْهَدَنَّ أَحَدُكُمْ قَتِيلًا لَعَلَّهُ أَنْ يَكُونَ قَدْ قُتِلَ ظُلْمًا فَيُصِيبَهُ السُّخْطُ
Narrated from Sayyiduna Khursha bin Harith, may Allah be pleased with him, who was among the Companions, that the Noble Prophet, peace and blessings be upon him, said: None of you should be present at the time of someone's killing, because it is possible that he is being killed unjustly, and thus the one present may also incur the displeasure of Allah Almighty.