Who is the Dajjal (the "anti-Christ")

Imraan bin Husain (R.A.) says Rasulullah (Salallahu Alayhi Wasallam) said: "Those who hear about Dajjal should stay far from him. By Allah! A person will approach him thinking him to be a Believer, but on seeing his amazing feats he will become his follower."

Ubadah bin Saamit (R.A.) once said, "I have explained Dajjal to you but I fear that you might not have understood. Maseeh Dajjal will be short, and his legs will be crooked. The hair on his head will be extremely twisted. He will have one eye (with which he can see, and this is the protruding eye about which other ahadeeth inform us) while his other eye will be totally flat. It will neither be deep (in its socket) nor protruding.

If you still have any doubt regarding him then remember that your Sustainer (Rabb) is not one-eyed. (Because Dajjal will eventually claim to be Allah). In a lengthy Hadith narrated by Abu Saeed (R.A.), Rasulullah (Salallahu Alayhi Wasallam) is reported to have said: "Dajjal will come but it will be prohibited and impossible for him to enter Madina. He will set up camp in a barren land outside Madina. One person who will be the best of persons will confront him by saying: "I bear witness that you are the very Dajjal about whom Rasulullah (Salallahu Alayhi Wasallam) has informed us."

Dajjal will say to his followers, "If I kill this person and then revive him, you people will still doubt me?"

They will reply, "No."

He will then kill this person, (according to another narration he will split this person in two) and thereafter revive him. This person will say, "I am totally convinced more than ever before that you definitely are Dajjal."

Dajjal will attempt to kill this person again but his efforts will now be in vain.

(According to a hadith, after this incident, Dajjal will not be able to harm anyone.)

NOTE: Rasulullah (Sallallahu Alayhi Wassallam) has exhorted the regular recital of Suratul Kahf which will most certainly save one from the Evils of Dajjal.