Musnad Ahmad 30:2372

Isma'il narrated to us, he said: Al-Jurayri informed us, from Abu Mus'ab, from Abu Hurayrah, who said: The Messenger of Allah, peace and blessings of Allah be upon him, said—and he gestured with his hand toward Yemen: "Faith is Yemeni, faith is Yemeni, faith is Yemeni. The head of disbelief is in the East. Arrogance and pride are in the *faddadin* (the loud-voiced ones): the owners of camel hair."