Musnad Ahmad 30:387

'Abd al-Razzaq narrated to us, 'Aqil ibn Ma'qil informed us, from Hammam ibn Munabbih, who said: I arrived in Medina and saw a circle near the pulpit of the Prophet, may Allah bless him and grant him peace. I asked, and it was said to me: "Abu Hurayrah." He said: So I greeted him, and he said to me: "From whom are you?" I said: "From the people of Yemen." He said: "I heard my beloved—or he said: I heard Abu al-Qasim, may Allah bless him and grant him peace—saying: 'Faith is Yemeni, and wisdom is Yemeni. They are the most tender-hearted, while harshness is in the loud-voiced ones, the owners of camels.'" And he pointed with his hand toward the east.