Hey avar. :)
It's narrated from ‘Abd-Allaah ibn ‘Umar (may Allaah be pleased with him), who said: “The Messenger of Allaah (peace and blessings of Allaah be upon him) said: ‘Whilst I was sleeping, I saw myself performing Tawaaf around the Ka’bah, when I saw a dark* man with straight hair, standing between two other men, with water dripping from his head. I asked, “Who is this?” They said, “The son of Maryam.”
Then I turned and saw a ruddy-complexioned man, well built, with curly hair, blind in his right eye, with his eye looking like a floating grape. I asked, “Who is this?” They said, “This is the Dajjaal [the anti-christ].” The person who looks most like him is Ibnu Qatan.’”
(Narrated by al-Bukhaari, no. 6508; Ibn Qatan was a man from Banu Mustalaq from Khuzaa’ah).
*I think i heard in a lecture by Anwar al-Awlaki that the word 'dark' (not sure of the real word in arabic) has two meanings, so it can mean light or dark [skin tone.] So Allaah knows best. However i may be wrong.