Sunan an-Nasa'i 4099
سنن النسائي#4099SahihIt was narrated that Ibn Az-Zubair said:"Whoever wields a weapon and starts to strike (the people) with it, it is permissible to shed his blood
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih Muquf
Al-AlbaniSahih Muquf
Zubair Ali ZaiHasan
In-book reference: 37:134