Musnad Ahmad 30:2282

Qutaybah ibn Sa'id narrated to us, 'Abd al-'Aziz narrated to us, from Thawr ibn Zayd, from Abu al-Ghayth, from Abu Hurayrah, that the Prophet, peace and blessings of Allah be upon him, said: "The one with the two thin shins from Abyssinia will destroy the House of Allah, the Almighty and Majestic." And he, peace and blessings of Allah be upon him, said: "The Hour will not be established until a man from Qahtan emerges, driving the people with his staff."