The Messenger of Allah ﷺ said, "Dajjal is blind in his left eye. Between his eyes is written 'disbeliever,' which both the illiterate and the literate can read."
قال رسول الله ﷺ: الدجال أعور بعين الشمال، بين عينيه مكتوب كافر يقرؤه الأمي والكاتب.
Ahmad (20401) narrated it from Yahya bin Saeed, from Uyayna, who said, my father narrated to me, from Abu Bakra, and he mentioned it. Its chain is hasan because of Uyayna, who is Ibn Abdul-Rahman bin Jawshan, for he is hasan al-hadith.