"Nafi narrated to us from Ibn 'Umar, who said: 'The Messenger of Allah said: There is no transaction between the two parties until they separate, unless they have chosen to conclude the transaction."" (Sahih ) (Using translation from Nasāʾī 4474)
قَالَ رَسُولُ اللهِ ﷺ كُلُّ بَيِّعَيْنِ لَا بَيْعَ بَيْنَهُمَا حَتَّى يَتَفَرَّقَا إِلَّا بَيْعَ الْخِيَارِ