Narrator:Abdullāh ibn ‘Umar
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم
" الْبَيِّعَانِ بِالْخِيَارِ حَتَّى يَفْتَرِقَا أَوْ يَكُونَ بَيْعَ خِيَارٍ "
It was narrated from Al-Laith from Nafi from Ibn 'Umar who said:
"The Messenger of Allah said: 'The two parties to a transaction both have the choice so long as they have not separated or they have chosen to conclude the transaction.' Or perhaps Nafi said: "Or one of them has said to the other: 'Decide! (Sahih )
Reported by An-Nasa’i (No. 4471, 4466, 4467, 4468, 4470, 4473, 4480), Al-Bukhari (No. 2107), Muslim (No. 1531d) and Ahmad (No. 370, 4254, 4338).