(27) Fitan
كتاب الفتن
(4a) Chapter: The Signs before the Last Hour, and an account of the Dajjal - Section 1
(3) باب العلامات بين يدي الساعة وذكر الدجال - الفصل الأول
Mishkat al-Masabih 5471 
Anas reported God's messenger as saying, "There is no prophet who has not warned his people about the one-eyed liar. I tell you that he is one-eyed, but your Lord is not one-eyed. On his forehead are the letters k, f, r." * *Meaning kufr (infidelity) to which he summons people. (Bukhari and Muslim.)
وَعَنْ أَنَسٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: " مَا مِنْ نَبِيٍّ إِلَّا أَنْذَرَ أُمَّتَهُ الْأَعْوَرَ الْكَذَّابَ أَلَا إِنَّهُ أَعْوَرُ وَإِنَّ رَبَّكُمْ لَيْسَ بِأَعْوَرَ مَكْتُوبٌ بَيْنَ عَيْنَيْهِ: ك ف ر ". مُتَّفَقٌ عَلَيْهِ
 مُتَّفَقٌ عَلَيْهِ  (الألباني)حكم :
Reference : Mishkat al-Masabih 5471
In-book reference : Book 27, Hadith 92