Sahih Bukhari

Narrated Ibn `Abbas:The Prophet (ﷺ) said, ""On the night of my Ascent to the Heaven, I saw Moses who was a tall brown curlyhaired man as if he was one of the men of Shan'awa tribe, and I saw Jesus, a man of medium height and moderate complexion inclined to the red and white colors and of lank hair. I also saw Malik, the gate-keeper of the (Hell) Fire and Ad-Dajjal amongst the signs which Allah showed me."" (The Prophet then recited the Holy Verse): ""So be not you in doubt of meeting him' when you met Moses during the night of Mi'raj over the heavens"" (32.23) Narrated Anas and Abu Bakra: ""The Prophet (ﷺ) said, ""The angels will guard Medina from Ad-Dajjal (who will not be able to enter the city of Medina)