Volume 3, Book 34, Number 296:
Narrated Hakim bin Hizam:
The Prophet aid, “The buyer and the seller have the option to cancel or to confirm the deal, as long
as they have not parted or till they part, and if they spoke the truth and told each other the defects of
the things, then blessings would be in their deal, and if they hid something and told lies, the blessing
of the deal would be lost.”