Sahih Muslim
The Book of Oaths, Muharibin, Qasas (Retaliation), and Diyat (Blood Money) — Hadith #4249
Scholarly Consensus: Sahih How we grade
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَمُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ، - وَاللَّفْظُ لاِبْنِ أَبِي شَيْبَةَ - قَالاَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، عَنِ الأَعْمَشِ، عَنْ عَبْدِ اللَّهِ بْنِ مُرَّةَ، عَنْ مَسْرُوقٍ، عَنْ عَبْدِ، اللَّهِ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" لاَ تُقْتَلُ نَفْسٌ ظُلْمًا إِلاَّ كَانَ عَلَى ابْنِ آدَمَ الأَوَّلِ كِفْلٌ مِنْ دَمِهَا لأَنَّهُ كَانَ أَوَّلَ مَنْ سَنَّ الْقَتْلَ " .
Allah’s Apostle (ﷺ) having said: No person who is killed unjustly, but the share of (this offence of his also) falls upon the first son of Adam, for he was the first to introduce killing.
Chain of Narration (Isnad)
Hadith Grading
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Scholarly Consensus: Sahih