(20) باب ذِكْرِ الدَّجَّالِ وَصِفَتِهِ وَمَا مَعَهُ
Anas b. Malik reported that Allah's Messenger (ﷺ) said:
There would be written three letters k. f. r., i. e. Kafir, between the eyes of the Dajjal. (ID)
Reference (ID): Sahih Muslim 2933 b (ID)
In-book reference (ID): Book 54, Hadith 128 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 41, Hadith 7008 (ID)