Abdul 'Aziz bin Muhammad al-Daruradi عبد العزيز بن محمد الدراوردي · The Chapters on Business Transactions

"Whoever buys food, let him not sell it until he has taken full possession of it."

"I heard the Messenger of Allah (ﷺ) say: 'The Muslim is the brother of another Muslim, and it is not permissible for a Muslim to sell his brother goods in which there is a defect, without pointing that out to him."'