Musnad Abu Ya'la al-Mawsili 115:176

Abu Musa narrated to us, Muhammad bin Ja'far narrated to us, Shu'bah narrated to us, from Qatadah, who said: I heard Anas say: The Messenger of Allah (ﷺ) said: "There is no prophet except that he warned his nation about the one-eyed Dajjal. Indeed, he is one-eyed, and your Lord is not one-eyed. Written between his eyes is 'Kafir' (disbeliever)."