“The martyrs are of five kinds:

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “The martyrs are of five kinds: one who dies of plague, one who dies of stomach disease, one who drowns, one who dies under debris, and one who dies in the path of Allah the Exalted.”

Source: Sahih Bukhari 2674, Sahih Muslim 1914

Grade: Mutaffaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Imam Muslim

عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ الشُّهَدَاءُ خَمْسَةٌ الْمَطْعُونُ وَالْمَبْطُونُ وَالْغَرِقُ وَصَاحِبُ الْهَدْمِ وَالشَّهِيدُ فِي سَبِيلِ اللَّهِ

2674 صحيح البخاري كِتَاب الْجِهَادِ وَالسِّيَرِ بَاب الشَّهَادَةُ سَبْعٌ سِوَى الْقَتْلِ

1914 صحيح مسلم كِتَاب الْإِمَارَةِ بَاب بَيَانِ الشُّهَدَاءِ