"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." (Using translation from Nasāʾī 4096)  

قَالَ رَسُولُ اللهِ ﷺ «مَنْ قُتِلَ دُونَ مَظْلَمَتِهِ فَهُوَ شَهِيدٌ»