Yonus bin Yazid bin Abi al-Nijad يونس بن يزيد بن أبي النجاد · Wages (Kitab Al-Ijarah)

The Messenger of Allah (ﷺ) forbade a townsman to sell for a man from the desert. I asked: What do you mean by the selling of a townsman for a man from the desert ? He replied: He should not be a broker for him.

The Prophet (ﷺ) said: If a man sells (his) property and the man who buys it becomes insolvent, and the seller does not receive the price of the property he had sold, but finds his very property with him (i.e. the buyer), he is more entitled to it (than others). If the buyer dies, then the owner of the property is equal to the creditors.