That a bedouin told him that he brought a milch she-camel in the time of the Messenger of Allah (ﷺ). He alighted with Talhah ibn Ubaydullah (and wanted to sell his milch animal to him). He said: The Prophet (ﷺ) forbade a townsman to sell for a man from the desert. But go to the market and see who buys from you. consult me thereafter, and then I shall ask you (to sell) or forbid you.
Sunan Abi Dawud Book 24, Hadith 26