Musnad Ahmad Hadith 27350

It is narrated from Fatimah bint Qais (may Allah be pleased with her) that once the Prophet (ﷺ) came out and led the Zuhr prayer. When the Messenger of Allah (ﷺ) completed his prayer, he sat on the pulpit. The people were surprised, so he said: "O people! Remain in your places of prayer. I have not gathered you to encourage you towards something or to frighten you from Allah. I have only gathered you because Tamim Dari came to me, pledged allegiance to Islam, and became Muslim. He told me something: that he boarded a sea ship with his cousins, and suddenly a storm arose in the sea. They reached an unknown island in the sea until the sun set. Then they entered the island in small boats. There they met an animal covered with thick and dense hair. They could not understand whether it was a man or a woman. They greeted it, and it replied. They asked, 'Who are you?' It said: 'O people! Go to that man in the monastery, for he is very eager to know about you.' We asked it, 'Who are you?' It said, 'I am Jassasah.' So they went until they entered the monastery. There was a man there who was bound with great severity. He asked, 'Who are you?' They said, 'We are people from Arabia.' He asked, 'What has happened to the people of Arabia? Has their Prophet appeared?' They said, 'Yes!' He asked, 'Then what did the people of Arabia do?' They replied, 'They did well, they believed in him and affirmed him.' He said, 'They did well.' Then he asked, 'What has happened to the people of Persia? Have they overcome them?' They said, 'They have not yet overcome the people of Persia.' He said, 'Remember! Soon they will overcome them.' He said, 'Tell me about the spring of Zughar.' We said, 'It has abundant water, and the people there cultivate crops with its water.' Then he said, 'What has happened to the date palms of Baisan? Have they started bearing fruit?' They said, 'Its early part has started to bear fruit.' At this, he jumped so much that we thought he would attack us. We asked him, 'Who are you?' He said, 'I am the Messiah (Dajjal). Soon I will be given permission to come out. When I come out, I will travel the earth and will descend upon every town in forty nights, except for Makkah and Taybah, for entering them has been made forbidden for me.' The Prophet (ﷺ) said: 'O Muslims! Rejoice, for Taybah is this Madinah. Dajjal will not be able to enter it.'"