Fath al-Rabbani

It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Whom do you consider to be a martyr? The people said: The one who is killed fighting in the way of Allah is a martyr. He (peace and blessings be upon him) said: Then the martyrs of my Ummah will be few. The one who is killed in the way of Allah is also a martyr, the one who dies of plague in the way of Allah is also a martyr, the one who drowns in the way of Allah is also a martyr, the one who dies after falling from his animal in the way of Allah is also a martyr, and the one who dies of pneumonia in the way of Allah is also a martyr. Muhammad, the narrator, said: By "majnoob" is meant "sahib al-janb" (the one suffering from a side disease). In one narration, there is also this addition: Death due to abdominal disease is also martyrdom, and women who die in the state of postnatal bleeding are also martyrs.