that the Messenger of Allah ﷺ said: "No soul is wrongfully taken except that some of the burden of its blood is upon the son of Adam, because he was the first to institute murder."

رَسُولُ اللَّهِ ﷺ مَا مِنْ نَفْسٍ تُقْتَلُ ظُلْمًا إِلاَّ كَانَ عَلَى ابْنِ آدَمَ كِفْلٌ مِنْ دَمِهَا وَذَلِكَ لأَنَّهُ أَوَّلُ مَنْ أَسَنَّ الْقَتْلَ وَقَالَ عَبْدُ الرَّزَّاقِ سَنَّ الْقَتْلَ