(19) باب إِذَا بَيَّنَ الْبَيِّعَانِ وَلَمْ يَكْتُمَا وَنَصَحَا
Narrated Hakim bin Hizam:
Allah's Messenger (ﷺ) said, "The seller and the buyer have the right to keep or return goods as long as they have not parted or till they part; and if both the parties spoke the truth and described the defects and qualities (of the goods), then they would be blessed in their transaction, and if they told lies or hid something, then the blessings of their transaction would be lost."
Reference: Sahih al-Bukhari 2079
In-book reference: Book 34, Hadith 32
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 34, Hadith 293