Musannaf Ibn Abi Shayba 13:935

Abu Bakr narrated to us, he said: Shababa narrated to us, from Ibn Abi Dhi'b, Muslim al-Khayyat narrated to me, from Ibn Umar, he said: The Messenger of Allah (may Allah bless him and grant him peace) forbade a resident from selling on behalf of a bedouin.