Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrates that the Prophet (peace and blessings be upon him) said: "Every prophet has warned his nation about the Dajjal, and I will tell you something about him which no prophet has told his nation. You should know that he is one-eyed, whereas your Lord is not one-eyed. Between his two eyes will be written 'Kafir' (disbeliever), which every believer will be able to read, whether he is literate or illiterate."