Afflictions and the End of the World
Bukhari :: Book 9 :: Volume 88 :: Hadith 232
Narrated Abu Huraira:
Allah's Apostle said, "The Hour will not be established till the buttocks of the women of the tribe of Daus move while going round Dhi-al-Khalasa." Dhi-al-Khalasa was the idol of the Daus tribe which they used to worship in the Pre Islamic Period of ignorance.