Musnad Ahmad 32:2150

Bahz narrated to us, Shu'bah narrated to us, he said: Qatadah informed me, he said: I heard Anas ibn Malik narrating from the Prophet, may Allah bless him and grant him peace, who said: "Allah, the Mighty and Majestic, did not send a prophet except that he warned his nation about the Dajjal. Behold, he is the one-eyed liar. Behold, he is one-eyed, and your Lord is not one-eyed. Written between his eyes is 'disbelief' (kufr)."