Sunan an-Nasai 18842
In-book no 4106أَخْبَرَنَا الْقَاسِمُ بْنُ زَكَرِيَّا بْنِ دِينَارٍ، قَالَ حَدَّثَنَا سَعِيدُ بْنُ عَمْرٍو الأَشْعَثِيُّ، قَالَ حَدَّثَنَا عَبْثَرٌ، عَنْ مُطَرِّفٍ، عَنْ سَوَادَةَ بْنِ أَبِي الْجَعْدِ، عَنْ أَبِي جَعْفَرٍ، قَالَ كُنْتُ جَالِسًا عِنْدَ سُوَيْدِ بْنِ مُقَرِّنٍ فَقَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ قُتِلَ دُونَ مَظْلَمَتِهِ فَهُوَ شَهِيدٌ " .
It was narrated that Abu Ja'far said: "I was sitting with Suwaid bin Muqarrin, and he said: The Messenger of Allah said: "Whoever is killed defending himself against injustice, he is a martyr."