Sunan Abi Dawud Book 37, Hadith 4
I swear by Allah, I do not know whether my companions have forgotten or have pretended to forgot. I swear by Allah that the Messenger of Allah (ﷺ) did not omit a leader of a wrong belief (fitnah)--up to the end of the world--whose followers reach the number of three hundred and upwards but he mentioned to us his name, his father's name and the name of his tribe.
When we were sitting with the Messenger of Allah (ﷺ), he talked about periods of trial (fitnahs), mentioning many of them.
When he mentioned the one when people should stay in their houses, some asked him: Messenger of Allah, what is the trial (fitnah) of staying at home?
He replied: It will be flight and plunder. Then will come a test which is pleasant. Its murkiness is due to the fact that it is produced by a man from the people of my house, who will assert that he belongs to me, whereas he does not, for my friends are only the God-fearing. Then the people will unite under a man who will be like a hip-bone on a rib. Then there will be the little black trial which will leave none of this community without giving him a slap, and when people say that it is finished, it will be extended. During it a man will be a believer in the morning and an infidel in the evening, so that the people will be in two camps: the camp of faith which will contain no hypocrisy, and the camp of hypocrisy which will contain no faith. When that happens, expect the Antichrist (Dajjal) that day or the next.
Subay' ibn Khalid said: I came to Kufah at the time when Tustar was conquered. I took some mules from it. When I entered the mosque (of Kufah), I found there some people of moderate stature, and among them was a man whom you could recognize when you saw him that he was from the people of Hijaz.
I asked: Who is he? The people frowned at me and said: Do you not recognize him? This is Hudhayfah ibn al-Yaman, the companion of the Messenger of Allah (ﷺ).
Then Hudhayfah said: People used to ask the Messenger of Allah (ﷺ) about good, and I used to ask him about evil. Then the people stared hard at him.
He said: I know the reason why you dislike it. I then asked: Messenger of Allah, will there be evil as there was before, after this good which Allah has bestowed on us?
He replied: Yes. I asked: Wherein does the protection from it lie? He replied: In the sword. I asked: Messenger of Allah, what will then happen?
He replied: If Allah has on Earth a caliph who flays your back and takes your property, obey him, otherwise die holding onto the stump of a tree.
I asked: What will come next? He replied: Then the Antichrist (Dajjal) will come forth accompanied by a river and fire. He who falls into his fire will certainly receive his reward, and have his load taken off him, but he who falls into his river will have his load retained and his reward taken off him.
I then asked: What will come next? He said: The Last Hour will come.