Sunan Abu Dawud
3475
Sahih+3

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

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid