Sahih Muslim | Book 20 | Hadith Number 4705

Narrated by It has been narrated on the authority of Abu Huraira that the, Messenger of Allah (may peace be upon him)
It has been narrated on the authority of Abu Huraira that the, Messenger of Allah (may peace be upon him) 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 Holy Prophet (may peace be upon him) 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.