«البيعان بالخيار ما لم يتفرقا أو يقول أحدهما لصاحبه اختر»
The Prophet (peace and blessings be upon him) said:
"The buyer and the seller have the option (to cancel the transaction) as long as they have not separated from each other, or one of them says to the other: Make your choice (whether to keep or cancel the sale)."
Hadith Referenceصحیح الجامع الصغیر / حرف الباء / 2895
Hadith Gradingالألبانی:صحيح
Hadith Takhrij[حم خ ٣] عن ابن عمر. الإرواء ١٣١٠/١.