The major portents of the Hour are those which were mentioned by the Prophet (peace and blessings of Allaah be upon him) in the hadeeth of Hudhayfah ibn Aseed, and there are ten signs: The Dajjaal; the descent of ‘Eesa ibn Maryam (Jesus son of Mary); Ya’jooj and Ma’jooj (Gog and Magog); three landslides, one in the east, one in the west and one in the Arabian Peninsula; the smoke; the rising of the sun from its place of setting; the Beast; and the fire which will drive the people to their place of gathering. These signs will appear one after another, and when the first of these signs appear, the others will come soon after.
Muslim narrated that Hudhayfah ibn Aseed al-Ghifaari (may Allaah be pleased with him) said: The Prophet (peace and blessings of Allaah be upon him) came out to us when we were discussing. He said: “What are you discussing?” They said: “We are talking about the Hour.” He said: “It will never begin until you see ten signs before it.” He mentioned the smoke, the Dajjaal, the Beast, the rising of the sun from its place of setting, the descent of ‘Eesa ibn Maryam (peace and blessings of Allaah be upon him), Ya’jooj and Ma’jooj, and three landslides, one in the east, one in the west and one in the Arabian Peninsula, and the last of that is a fire which will emerge from Yemen and drive the people to their place of gathering.
There is no saheeh text which states the order in which these signs will occur, rather the order of some of them is to be understood from the context of the texts.
Shaykh Muhammad al-Saalih al-‘Uthaymeen (may Allaah have mercy on him) was asked:
Will the major portents of the Hour occur in a certain order?
The order of some of the major portents is known, and in the case of others the order is not known. Among those whose order is known are the descent of ‘Eesa ibn Maryam, the emergence of Ya’jooj and Ma’jooj, and the Dajjaal, for the Dajjaal will be sent, then ‘Eesa ibn Maryam will come down and kill him, then Ya’jooj and Ma’jooj will emerge.
Al-Safareeni (may Allaah have mercy on him) listed the order of these portents in his ‘Aqeedah, but some of the order is acceptable whilst some of it is not. But what matters is that there are major signs of the Hour and when they happen, the Hour has drawn nigh. Allaah has decreed portents of the Hour, because it is a serious event and people need to know when it is about to happen. End quote.
Majmoo’ al-Fataawa (2/question no. 137)