Allah's Messenger (ﷺ) said, "The seller and the buyer have the option of canceling or confirming the deal
unless they separate, or one of them says to the other, 'Choose (i.e. decide to cancel or confirm the
bargain now)." Perhaps he said, 'Or if it is an optional sale.' " Ibn `Umar, Shuraih, Ash-Shu`bi, Tawus,
Ata, and Ibn Abu Mulaika agree upon this judgment.
Sahih al-Bukhari Book 34, Hadith 62