(51) باب بَيَانِ الشُّهَدَاءِ
It has been narrated on the authority of Abu Huraira that the, Messenger of Allah (ﷺ) said:
While a man walks along a path, finds a thorny twig lying on the way and puts it aside, Allah would appreciate it and forgive him The Prophet (ﷺ) said: The martyrs are of five kinds: one who dies of plague; one who dies of diarrhoea (or cholera) ; one who is drowned; one who is buried under debris and one who dies fighting in the way of Allah.
Reference: Sahih Muslim 1914
In-book reference: Book 33, Hadith 235
USC-MSA web (English) reference(deprecated numbering scheme): Book 20, Hadith 4705