The Messenger of Allah ﷺ said, "I know more about what accompanies Dajjal than Dajjal himself does. With him are two flowing rivers. One appears to the eye as clear white water, and the other appears to the eye as a blazing fire. If any of you encounters him, let him go to the river that looks like fire, close his eyes, lower his head, and drink from it, for it is in fact cool water. As for Dajjal, his left eye is wiped out and covered by a thick membrane, and between his eyes is written 'Kafir,' which every believer can read, whether literate or not."
حدثنا يزيد بن هارون أخبرنا أبو مالك الأشجعي سعد بن طارق حدثنا ربعي بن حراش
قال رسول الله ﷺ لأنا أعلم بما مع الدجال من الدجال معه نهران يجريان أحدهما رأي العين ماء أبيض والآخر رأي العين نار تأجج فإن أدركن واحدا منكم فليأت النهر الذي يراه نارا فليغمض ثم ليطأطئ رأسه فليشرب فإنه ماء بارد وإن الدجال ممسوح العين اليسرى عليها ظفرة غليظة مكتوب بين عينيه كافر يقرؤه كل مؤمن كاتب وغير كاتب