Sunan an-Nasa'i 3986
سنن النسائي#3986Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ مُعَاوِيَةَ بْنِ مَالَجَ، قَالَ حَدَّثَنَا مُحَمَّدُ بْنُ سَلَمَةَ الْحَرَّانِيُّ، عَنِ ابْنِ إِسْحَاقَ، عَنْ إِبْرَاهِيمَ بْنِ مُهَاجِرٍ، عَنْ إِسْمَاعِيلَ، مَوْلَى عَبْدِ اللَّهِ بْنِ عَمْرٍو عَنْ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ الْعَاصِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " وَالَّذِي نَفْسِي بِيَدِهِ لَقَتْلُ مُؤْمِنٍ أَعْظَمُ عِنْدَ اللَّهِ مِنْ زَوَالِ الدُّنْيَا " . قَالَ أَبُو عَبْدِ الرَّحْمَنِ إِبْرَاهِيمُ بْنُ الْمُهَاجِرِ لَيْسَ بِالْقَوِيِّ .
It was narrated that 'Abdullah bin 'Amr bin Al-'As said:"The Messenger of Allah [SAW] said: 'By the One in Whose Hand is my soul, killing a believer is more grievous before Allah than the extinction of the whole world
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 37:21