It was narrated that 'Uqbah bin 'Amir said: 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. '
It was narrated that Wathilah bin Asqa' said: I heard the Messenger of Allah (ﷺ) say: 'Whoever sells defective goods without pointing it out, he will remain subject to the wrath of Allah, and the angels will continue to curse him.'