وَعَنْ عَلِيٍّ رَضِيَ اللَّهُ عَنْهُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «الْمُسْلِمُونَ تَتَكَافَأُ دِمَاؤُهُمْ وَيَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ وَيَرُدُّ عَلَيْهِمْ أَقْصَاهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ أَلَا لَا يُقْتَلُ مُسْلِمٌ بِكَافِرٍ وَلَا ذُو عَهْدٍ فِي عَهْدِه» . رَوَاهُ أَبُو دَاوُد وَالنَّسَائِيّ
‘Ali reported the Prophet as saying, “The lives of all Muslims are equal; the lowliest of them can guarantee their protection, the most distant can keep others from breaking protection he has given, and they are one band against others. A Muslim must not be killed for an infidel, nor must one who has been given a covenant be killed while his covenant holds.” Abu Dawud and Nasa’i transmitted it.