Musannaf Ibn Abi Shaybah 22495 — A man who buys a slave or a house

It is narrated from Yazid bin Abi Habib that a man sold his son's house, and the father was feeble-minded. The son came to Umar bin Abd al-Aziz, who annulled the sale and ruled that the house was the son's. The son asked: What about its rent? Umar bin Abd al-Aziz said: Its profit goes along with liability.