Narrator:Abdullāh ibn ‘Umar
أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ، عَنْ إِسْمَاعِيلَ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" كُلُّ بَيِّعَيْنِ لاَ بَيْعَ بَيْنَهُمَا حَتَّى يَتَفَرَّقَا إِلاَّ بَيْعَ الْخِيَارِ "
It was narrated from Ismail from 'Abdullah bin Dinar, from Ibn 'Umar, who said:
"The Messenger of Allah said: 'When two people meet to engage in trade, the transaction between them is not binding until they separate, unless they have chosen to conclude the transaction.,'"
Reported by An-Nasa’i (No. 4475, 4474, 4476, 4477, 4478, 4479), Al-Bukhari (No. 2113), Muslim (No. 1531e) and Ahmad (No. 4884, 5917).