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 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, describing the appearance of his parents, he said: His father will be a tall man, his flesh will shake, and his nose will be long, it will seem as if it is the beak of a parrot. His mother will be a woman with large breasts. After some time, we came to know that a child was born to the Jews in Medina. I and Zubair bin Al-Awwam went to see him. When we reached his parents, we found the description given by the Prophet (peace and blessings be upon him) to be true. The child was lying wrapped in a sheet, making faint sounds. We asked his parents about him, and they told us: We spent thirty years in such a state that we had no child, then this one-eyed child was born to us, whose harm is greater and benefit less. When we left from there and passed by him, he said: What were you talking about? We said: Did you hear what we were saying? He said: Yes, my eyes sleep but my heart does not sleep. He was Ibn Sayyad.