«البيعان بالخيار ما لم يتفرقا فإن صدقا وبينا بورك لهما في بيعهما وإن كتما وكذبا محقت بركة بيعهما»
The Prophet (peace and blessings be upon him) said:
"The buyer and the seller have the option (to cancel the deal) as long as they have not parted from one another. So if they both spoke the truth and made (the merits and defects of the item) clear, their transaction will be blessed; but if they concealed (a defect) and lied, the blessing of their transaction will be wiped out."
Hadith Referenceصحیح الجامع الصغیر / حرف الباء / 2896
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم ق ٣] عن حكيم بن حزام. مختصر مسلم ٩٤٥، الإرواء ١٢٨١.