Musnad Ahmad 33:1103

Aswad ibn Amir narrated to us, al-Hasan—meaning Ibn Salih—narrated to us, from Abu al-Zubayr, from Jabir, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "Let no resident sell for a bedouin. Leave the people, that Allah may provide for some of them through others."