Sunan an-Nasa'i 4097
سنن النسائي#4097Da'ifأَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا الْفَضْلُ بْنُ مُوسَى، قَالَ حَدَّثَنَا مَعْمَرٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ الزُّبَيْرِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ " مَنْ شَهَرَ سَيْفَهُ ثُمَّ وَضَعَهُ فَدَمُهُ هَدَرٌ " .
It was narrated from Ibn Az-Zubair that:The Messenger of Allah [SAW] said: "Whoever unsheathes his sword and starts to strike the people with it, it is permissible to shed his blood
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:
Abu GhuddahShadh
Al-AlbaniShadh
Zubair Ali ZaiIsnaad Sahih
In-book reference: 37:132