Narrated Mujahid:
That when the people mentioned before Ibn 'Abbas that the Dajjal would have the word Kafir, (i.e. unbeliever) or the letters Kafir (the root of the Arabic verb 'disbelieve') written on his forehead,...
Praise is to Allah Who has provided us with food and with drink, sufficed us and gave us an abode for how many are there with no provision and no home.