Silsilat al-Ahadith al-Sahihah

Narrated from Sayyidah Aisha (may Allah be pleased with her), the Messenger of Allah (peace and blessings be upon him) said: "The plague is martyrdom for my Ummah and regret and remorse for your enemies among the jinn. Its wound is like the gland of a camel, which appears on the armpit and the soft part of the belly. Whoever dies because of this disease is a martyr, and whoever remains steadfast (in the same area) is like one who stays stationed at the frontier in the way of Allah, and whoever flees is like one who flees from battle."