Murder of al-Nafs al-Zakiyya (Arabic: قتل النفس الزكية, Persian: قتل نفس زکیه), is the murder of a person who is called Nafs-e-Zakiyyah (the Pure Soul), that is according to the hadiths of Shia Islam: "A decisive sign of the reappearance of Hujjat-Allah al-Mahdi (known as Imam al-Mahdi)".