Narrated Abu Huraira (radiallaahu `anhu):
The Prophet (sallallaahu `alayhi wasallam) said, “Dhus-Suwaiqa-tain (literally: One with two lean legs) from Ethiopia will demolish the Ka’ba.”
This Hadith talks about the end of times, when people will have forgotten the Quran altogether, and there’ll be no khayr (good) on Earth. The time when Ka`bah will also be removed from Earth, as it is also ‘good’. An Ethiopian will demolish it. And Allah knows best.