سَأَلْتُهُ عَنْ رَجُلٍ اشْتَرَى مِنْ رَجُلٍ عَبْداً وَ كَانَ عِنْدَهُ عَبْدَانِ فَقَالَ لِلْمُشْتَرِي اذْهَبْ بِهِمَا فَاخْتَرْ أَيَّهُمَا شِئْتَ وَ رُدَّ الْآخَرَ وَ قَدْ قَبَضَ الْمَالَ فَذَهَبَ بِهِمَا الْمُشْتَرِي فَأَبَقَ أَحَدُهُمَا مِنْ عِنْدِهِ قَالَ لِيَرُدَّ الَّذِي عِنْدَهُ مِنْهُمَا وَ يَقْبِضُ نِصْفَ الثَّمَنِ مِمَّا أَعْطَى مِنَ الْبَيِّعِ وَ يَذْهَبُ فِي طَلَبِ الْغُلَامِ فَإِنْ وَجَدَ اخْتَارَ أَيَّهُ
“I once asked abu Ja‘far (a.s.), about the case of a man who buys a slave from another man who had two slaves and he says to the buyer, Take both of them then choose whichever you like and return the other’ and he has received payment. The buyer takes both of them but one of them runs away from the location of the buye