Narrated Ibn `Umar: The Prophet said, "The buyer and the seller have the option to cancel or confirm the bargain before they separate from each other or if the sale is optional." Nafi` said, "Ibn `Umar used to separate quickly from the seller if he had bought a thing which he liked."
Hadith Referenceصحيح البخاري / كتاب البيوع / 2107
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة