One day Allah's Messenger (ﷺ) narrated to us a long narration about Ad-Dajjal and among the things he
narrated to us, was: "Ad-Dajjal will come, and he will be forbidden to enter the mountain passes of
Medina. He will encamp in one of the salt areas neighboring Medina and there will appear to him a
man who will be the best or one of the best of the people. He will say 'I testify that you are Ad-Dajjal
whose story Allah's Messenger (ﷺ) has told us.' Ad-Dajjal will say (to his audience), 'Look, if I kill this man
and then give him life, will you have any doubt about my claim?' They will reply, 'No,' Then Ad-
Dajjal will kill that man and then will make him alive. The man will say, 'By Allah, now I recognize
you more than ever!' Ad-Dajjal will then try to kill him (again) but he will not be given the power to
do so."
Sahih al-Bukhari Book 92, Hadith 79