THE DESTRUCTION OF THE KA'BAH
It was reported from 'Abdullâh ibn 'Umar that the Prophet - sallallâhu ’alayhi wa sallam - said, "Leave the Abyssinians alone so long as they do not disturb you, for no-one will recover the treasure of the Ka'bah except Dhu'l-Suwayqatayn from Abyssinia." (Abû Dâwûd, in the chapter on the prohibition of provoking the Abyssinians)
Ibn 'Abbas narrated that the Prophet - sallallâhu ’alayhi wa sallam - said, "It is as if I can see him now: he is black and his legs are widely spaced. He will destroy the Ka'bah stone by stone." (Ahmad) The Prophet - sallallâhu ’alayhi wa sallam - said, "The Hour will not come until a man from Qahtan appears and rules the people." (Muslim; similar Hadîth in al-Bukhârî) This man could be Dhu'l-Suwayq, someone else, because this man comes from Qahtan, while other reports say that Dhu'l-Suwayqatayn comes from Abyssinia; and Allâh knows best. Abû Hurayrah said, "The Prophet - sallallâhu ’alayhi wa sallam - said, 'Day and night will not come to an end until a freed man called Jahjah holds sway'" (Ahmad)
This could be the name of Dhul-Suwayqatayn from Abyssinia; and Allâh knows best.
Madînah WILL REMAIN INHABITED AT THE TIME OF THE DAJJAL
It has been proven in the Saheeh Ahadîth, as already stated, that the Dajjal will not be able to enter Makkah and Madînah, and that there will be angels at the gates of Makkah to ward him off and prevent him from entering. It was reported from Abû Hurayrah that the Prophet - sallallâhu ’alayhi wa sallam - said, "Neither the Dajjal nor plague will be able to enter Madînah."As mentioned above, the Dajjal will camp outside Madînah, and it will be shaken by three tremors. Every hypocrite and sinner will go out to join the Dajjal, and every believer and Muslim will stay. That day will be called the Day of Purification (Yawm al-Khalas). Most of those who go out to join the Dajjal will be women. As the Prophet - sallallâhu ’alayhi wa sallam - said, "Verily it (Madînah) is good; its evil will be eliminated and its goodness will be obvious."
Allâh - subhânahu wa Ta’âla - said: "Women impure are for men impure, and men impure for women impure, and women of purity are for men of purity, and men of purity are for women of purity" (Al-Nur 24-26)
Madînah will remain inhabited during the days of the Dajjal, and during the time of Jesus son of Mary (AS), until he dies and is buried there. Then it will be destroyed.
FOOTNOTE: *Dhu'l-Suwayqatayn: al-Suwayqatayn is the diminutive of al-Saqayn (legs); his legs are described as being "small" because they are thin. Thin legs are, in general, a characteristic of the Sudanese and people of the Horn of Africa.