question #1 Sahih al-Bukhari 2082, Book 34, Hadith 35 : What options do the buyer and seller have in a transaction before they part ways?

The Prophet (ﷺ) aid, “The buyer and the seller have the option to cancel or to confirm the deal, as long as
they have not parted or till they part, and if they spoke the truth and told each other the defects of the
things, then blessings would be in their deal, and if they hid something and told lies, the blessing of
the deal would be lost.”