Sayyiduna Anas (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings of Allah be upon him): "Between his two eyes will be written 'K F R' (disbeliever), which every believer will read, whether he is literate or illiterate."
(The narrator says:) This refers to the Dajjal (i.e., this will be written between his eyes).
Hadith Referenceصحیح ابن حبان / كتاب التاريخ / 6793
Hadith Gradingفضيلة الشيخ الإمام محمد ناصر الدين الألبانيصحيح - «الصحيحة» (2457): م.فضيلة الشيخ العلّامة شُعيب الأرناؤوطحديث صحيح