Sunan Abi Dawud
Hadith #3475
The tradition mentioned above has also been related by al-'Amash to the same effect through a different chain of narrators. This version adds:""He used: 'Not purify them ; grievously will be their penalty.'"" He said about (selling) the goods: I swear by Allah, I was given (the price) so and so for it. The other man considered it to be correct and bought it