"The lives of the believers are equal in value, and they are one against others, and they hasten to support the asylum granted by the least of them. But no believer may be killed in return for a disbeliever, nor one with a covenant while his covenant is in effect."  

أَنَّ النَّبِيَّ ﷺ قَالَ الْمُؤْمِنُونَ تَكَافَأُ دِمَاؤُهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ لاَ يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلاَ ذُو عَهْدٍ فِي عَهْدِهِ  

The Messenger of Allah ﷺ said: Muslims are equal in respect of blood. The lowest of them is entitled to give protection on behalf of them, and the one residing far away may give protection on behalf of them. They are like one hand over against all those who are outside the community. Those who have quick mounts should return to those who have slow mounts, and those who got out along with a detachment (should return) to those who are stationed. A believer shall not be killed for an unbeliever, nor a confederate within the term of confederation with him. Ibn Ishaq did not mention retaliation and equality in respect of blood.  

قَالَ رَسُولُ اللَّهِ ﷺ الْمُسْلِمُونَ تَتَكَافَأُ دِمَاؤُهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ وَيُجِيرُ عَلَيْهِمْ أَقْصَاهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ يَرُدُّ مُشِدُّهُمْ عَلَى مُضْعِفِهِمْ وَمُتَسَرِّعُهُمْ عَلَى قَاعِدِهِمْ لاَ يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلاَ ذُو عَهْدٍ فِي عَهْدِهِ وَلَمْ يَذْكُرِ ابْنُ إِسْحَاقَ الْقَوَدَ وَالتَّكَافُؤَ  

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  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ الْمُؤْمِنُونَ تَكَافَأُ دِمَاؤُهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ أَلا لَا يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلا ذُو عَهْدٍ فِي عَهْدِهِ  

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)  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «الْمُؤْمِنُونَ تَكَافَأُ دِمَاؤُهُمْ وَهُمْ يَدٌ عَلَى مَنْ سِوَاهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ لَا يُقْتَلُ مُؤْمِنٌ بِكَافِرٍ وَلَا ذُو عَهْدٍ فِي عَهْدِهِ»  

[Machine] The Messenger of Allah ﷺ gave a sermon during the year of the Conquest and said, "And the Muslims have authority over those other than themselves. They seek tribute from them in a way that debases them, and they repel the furthest regions from them. They bring their forts back to themselves on their own terms." Yahya ibn Sa'id narrated from 'Amr and said, "Their harnesses are returned to their weakened state, and their hastiness is returned to their own seated position."  

خَطَبَ رَسُولُ اللهِ ﷺ عَامَ الْفَتْحِ فَقَالَ فِيهِ وَالْمُسْلِمُونَ يَدٌ عَلَى مَنْ سِوَاهُمْ يَسْعَى بِذِمَّتِهِمْ أَدْنَاهُمْ يَرُدُّ عَلَيْهِمْ أَقْصَاهُمْ تَرُدُّ سَرَايَاهُمْ عَلَى قَعَدَتِهِمْ وَرَوَاهُ يَحْيَى بْنُ سَعِيدٍ عَنْ عَمْرٍو فَقَالَ يَرُدُّ مُشِدُّهُمْ عَلَى مُضْعِفِهِمْ وَمُتَسَرِّعُهُمْ عَلَى قَاعِدِهِمْ  

"المسلمون يدٌ على مَنْ سواهم تتكافأُ دماؤُهم ويسعى بذمتهم أَدْنَاهُم، ولا يُقْتَلُ مسلمٌ بكافِر ولَا ذُو عَهْدٍ في عَهْدِهِ".  

"المسلمون تتكافأُ دِماؤهم، ويسعى بذمتهم أَدناهُم، ويُجيرُ عليهم أقصاهم، وهم يدٌ على من سواهم، يرد مُشِدهم عَلَى مُضْعفهم، ومُسْرِعهم على قاعدِهِم، لا يُقْتَلُ مُؤمِنٌ بكافِرٍ، ولا ذُو عهد في عَهْدِهِ".