Sayyiduna Ibn Umar (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him) said: "The destruction of my Ummah will be through arrows and plague." We said: O Messenger of Allah! We know what arrows are, but what is plague? He (peace and blessings be upon him) said: "It is the attack of your enemy jinn, and in each there is martyrdom."