Sunan an-Nasa'i 4096
سنن النسائي#4096SahihIt was narrated that Abu Ja'far said:"I was sitting with Suwaid bin Muqarrin, and he said: The Messenger of Allah [SAW] said: "Whoever is killed defending himself against injustice, he is a martyr
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih
In-book reference: 37:131