Narrated Abu Huraira: The Prophet said, "Time will pass rapidly, good deeds will decrease, miserliness will be thrown (in the hearts of the people) afflictions will appear and there will be much 'Al-Harj." They said, "O Allah's Apostle! What is "Al-Harj?" He said, "Killing! Killing!"
Narrated Az-Zubair bin 'Adi: We went to Anas bin Malik and complained about the wrong we were suffering at the hand of Al-Hajjaj. Anas bin Malik said, "Be patient till you meet your Lord, for no time will come upon you but the time following it will be worse than it. I heard that from the Prophet."
Narrated Abu Huraira: Allah's Apostle said, "There will be afflictions (in the near future) during which a sitting person will be better than a standing one, and the standing one will be better than the walking one, and the walking one will be better than the running one, and whoever will expose himself to these afflictions, they will destroy him. So whoever can find a place of protection or refuge from them, should take shelter in it.
Narrated Hudhaifa bin Al-Yaman: The people used to ask Allah's Apostle about the good but I used to ask him about the evil lest I should be overtaken by them. So I said, "O Allah's Apostle! We were living in ignorance and in an (extremely) worst atmosphere, then Allah brought to us this good (i.e., Islam); will there be any evil after this good?" He said, "Yes." I said, 'Will there be any good after that evil?" He replied, "Yes, but it will be tainted (not pure.)'' I asked, "What will be its taint?" He replied, "(There will be) some people who will guide others not according to my tradition? You will approve of some of their deeds and disapprove of some others." I asked, "Will there be any evil after that good?" He replied, "Yes, (there will be) some people calling at the gates of the (Hell) Fire, and whoever will respond to their call, will be thrown by them into the (Hell) Fire." I said, "O Allah s Apostle! Will you describe them to us?" He said, "They will be from our own people and will speak our language." I said, "What do you order me to do if such a state should take place in my life?" He said, "Stick to the group of Muslims and their Imam (ruler)." I said, "If there is neither a group of Muslims nor an Imam (ruler)?" He said, "Then turn away from all those sects even if you were to bite (eat) the roots of a tree till death overtakes you while you are in that state."
Narrated Abu Sa'id: One day Allah's Apostle 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 Apostle 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."
Narrated Zainab bint Jahsh: That one day Allah's Apostle entered upon her in a state of fear and said, "None has the right to be worshipped but Allah! Woe to the Arabs from the Great evil that has approached (them). Today a hole has been opened in the dam of Gog and Magog like this." The Prophet made a circle with his index finger and thumb. Zainab bint Jahsh added: I said, "O Alllah's Apostle! Shall we be destroyed though there will be righteous people among us?" The Prophet said, "Yes, if the (number) of evil (persons) increased."