صحيح البخاري
Sahih Bukhari
كتاب البيوع
The Book of Sales (Bargains)
بَابُ لاَ يَبِيعُ عَلَى بَيْعِ أَخِيهِ وَلاَ يَسُومُ عَلَى سَوْمِ أَخِيهِ، حَتَّى يَأْذَنَ لَهُ أَوْ يَتْرُكَ:
(58) Chapter. A seller should not urge somebody (in case of optional sale) to cancle a bargain the latter has already agreed upon with another seller so as to sell him his own goods; and a buyer should not urge the seller to cencle a barbain already agreed upon with another buyer so as to buy the goods himself, unless they are given permission in both cases, or the bargains are cancelled with the willingness of both the seller and the buyer.
Hadith 2139
حَدَّثَنَا إِسْمَاعِيلُ ، قَالَ : حَدَّثَنِي مَالِكٌ ، عَنْ نَافِعٍ ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُ ، أَنّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : " لَا يَبِيعُ بَعْضُكُمْ عَلَى بَيْعِ أَخِيهِ " .
Narrated `Abdullah bin `Umar: Allah's Apostle said, "Do not urge somebody to return what he has already bought (i.e. in optional sale) from another seller so as to sell him your own goods."
