ʿThe believers are equal in respect of blood and they are one against their enemies; protection given even by the least among them is to be honoured, but no believer is to be killed (in retaliation) for a disbeliever and no one who has a covenant is to be killed during the covenant.ʿ (Using translation from Aḥmad 991)
قَالَ رَسُولُ اللهِ ﷺ لَا يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلَا ذُو عَهْدٍ فِي عَهْدِهِ وَالْمُسْلِمُونَ يَدٌ عَلَى مَنْ سِوَاهُمْ تَتَكَافَأُ دِمَاؤُهُمْ