Sunan an-Nasa'i 3990
سنن النسائي#3990Sahihأَخْبَرَنَا الْحَسَنُ بْنُ إِسْحَاقَ الْمَرْوَزِيُّ، - ثِقَةٌ - حَدَّثَنِي خَالِدُ بْنُ خِدَاشٍ، قَالَ حَدَّثَنَا حَاتِمُ بْنُ إِسْمَاعِيلَ، عَنْ بَشِيرِ بْنِ الْمُهَاجِرِ، عَنْ عَبْدِ اللَّهِ بْنِ بُرَيْدَةَ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " قَتْلُ الْمُؤْمِنِ أَعْظَمُ عِنْدَ اللَّهِ مِنْ زَوَالِ الدُّنْيَا " .
It was narrated from 'Abdullah bin Buraidah that his father said:"The Messenger of Allah [SAW] said: '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: 37:25