Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “Who do you consider a martyr among you?” They said, “The one who is killed in the way of Allah.” The Prophet said, “If that were so, there are few martyrs in my nation.” They said, “O Messenger of Allah, then who are the martyrs?” The Prophet said, “One who is killed in the way of Allah is a martyr, one who dies in the way of Allah is a martyr, one who dies of plague is a martyr, one who dies of stomach infection is a martyr, and one who dies from drowning is a martyr.”
Source: Ṣaḥīḥ Muslim 1915
Grade: Sahih (authentic) according to Muslim
عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَا تَعُدُّونَ الشَّهِيدَ فِيكُمْ قَالُوا يَا رَسُولَ اللَّهِ مَنْ قُتِلَ فِي سَبِيلِ اللَّهِ فَهُوَ شَهِيدٌ قَالَ إِنَّ شُهَدَاءَ أُمَّتِي إِذًا لَقَلِيلٌ قَالُوا فَمَنْ هُمْ يَا رَسُولَ اللَّهِ قَالَ مَنْ قُتِلَ فِي سَبِيلِ اللَّهِ فَهُوَ شَهِيدٌ وَمَنْ مَاتَ فِي سَبِيلِ اللَّهِ فَهُوَ شَهِيدٌ وَمَنْ مَاتَ فِي الطَّاعُونِ فَهُوَ شَهِيدٌ وَمَنْ مَاتَ فِي الْبَطْنِ فَهُوَ شَهِيدٌ
1915 صحيح مسلم كتاب الإمارة باب بيان الشهداء