”A believer should not be killed in retaliation for the murder of a disbeliever, and a person who has a treaty should not be killed during the time of the treaty.” (Using translation from Ibn Mājah 2660)
قَالَ رَسُولُ اللهِ ﷺ لَا يُقْتَلُ مُؤْمِنٌ بِكَافِرٍوَلَا ذُو عَهْدٍ فِي عَهْدِهِ