Read Ruku 11 of the Quran

وَإِذْ أَخَذْنَا مِيثَـٰقَكُمْ لَا تَسْفِكُونَ دِمَآءَكُمْ وَلَا تُخْرِجُونَ أَنفُسَكُم مِّن دِيَـٰرِكُمْ ثُمَّ أَقْرَرْتُمْ وَأَنتُمْ تَشْهَدُونَ ﴿٨٤﴾

And [recall] when We took your covenant, [saying], "Do not shed each other's blood or evict one another from your homes." Then you acknowledged [this] while you were witnessing.

ثُمَّ أَنتُمْ هَـٰٓؤُلَآءِ تَقْتُلُونَ أَنفُسَكُمْ وَتُخْرِجُونَ فَرِيقًۭا مِّنكُم مِّن دِيَـٰرِهِمْ تَظَـٰهَرُونَ عَلَيْهِم بِٱلْإِثْمِ وَٱلْعُدْوَٰنِ وَإِن يَأْتُوكُمْ أُسَـٰرَىٰ تُفَـٰدُوهُمْ وَهُوَ مُحَرَّمٌ عَلَيْكُمْ إِخْرَاجُهُمْ ۚ أَفَتُؤْمِنُونَ بِبَعْضِ ٱلْكِتَـٰبِ وَتَكْفُرُونَ بِبَعْضٍۢ ۚ فَمَا جَزَآءُ مَن يَفْعَلُ ذَٰلِكَ مِنكُمْ إِلَّا خِزْىٌۭ فِى ٱلْحَيَوٰةِ ٱلدُّنْيَا ۖ وَيَوْمَ ٱلْقِيَـٰمَةِ يُرَدُّونَ إِلَىٰٓ أَشَدِّ ٱلْعَذَابِ ۗ وَمَا ٱللَّهُ بِغَـٰفِلٍ عَمَّا تَعْمَلُونَ ﴿٨٥﴾

Then, you are those [same ones who are] killing one another and evicting a party of your people from their homes, cooperating against them in sin and aggression. And if they come to you as captives, you ransom them, although their eviction was forbidden to you. So do you believe in part of the Scripture and disbelieve in part? Then what is the recompense for those who do that among you except disgrace in worldly life; and on the Day of Resurrection they will be sent back to the severest of punishment. And Allah is not unaware of what you do.

أُو۟لَـٰٓئِكَ ٱلَّذِينَ ٱشْتَرَوُا۟ ٱلْحَيَوٰةَ ٱلدُّنْيَا بِٱلْـَٔاخِرَةِ ۖ فَلَا يُخَفَّفُ عَنْهُمُ ٱلْعَذَابُ وَلَا هُمْ يُنصَرُونَ ﴿٨٦﴾

Those are the ones who have bought the life of this world [in exchange] for the Hereafter, so the punishment will not be lightened for them, nor will they be aided.