Musannaf Ibn Abi Shayba 27:868

Al-Fadl ibn Dukayn narrated to us, from Abu Khulda, from Abu al-Aliyah, who said: The Prophet (peace be upon him) was recited to by one man from every five. They differed in dialect, so he approved of all of their recitations. And the Banu Tamim were the most eloquent of the people.