Sayyiduna Jabir (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him), while mentioning the Dajjal, said: "I will tell you something about him that no prophet before me has told: he will be one-eyed, and Allah Almighty is not one-eyed, and between the Dajjal's two eyes will be written 'Kafir' (disbeliever)." Sayyiduna Jabir (may Allah be pleased with him) also narrates from the Prophet (peace and blessings be upon him): "Every believer, whether literate or not, will be able to read this word. The Dajjal will remain on earth for forty days. He will reach every city except these two cities, Madinah and Makkah; Allah Almighty has made both of these cities forbidden to him. One of his days will be like a year, one day like a month, one day like a week, and the rest of his days will be like your ordinary days. He will remain only forty days."
Al-Tabarani recorded it in al-Mu'jam al-Awsat. Its chain contains Zam'ah bin Salih, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الفتن - أعاذنا الله منها / 12546