Mukhtasar Muslim

It is narrated from Sayyiduna Hudhaifah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: I know well what will happen with the Dajjal. He will have two flowing rivers with him; one will appear to be white water to the eye, and the other will appear to be blazing fire. Then whoever encounters this situation should enter the river that appears to be fire, close his eyes, lower his head, and drink from it—it will be cool water. And one of Dajjal’s eyes will be completely flat, upon it will be a thick piece of flesh, and between his two eyes will be written "Kafir" (disbeliever), which every believer will read, whether he knows how to write or not.