It is narrated from Hazrat Abu Bakrah (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: The parents of the Dajjal will remain for thirty years in such a state that they will have no children. Then a child will be born to them who will be one-eyed, his harm will be greater and his benefit less. His eyes will sleep but his heart will not sleep... Then the narrator mentioned the complete hadith.