صحيح مسلم
Sahih Muslim
كتاب البيوع
The Book of Transactions
باب تَحْرِيمِ بَيْعِ الرَّجُلِ عَلَى بَيْعِ أَخِيهِ وَسَوْمِهِ عَلَى سَوْمِهِ وَتَحْرِيمِ النَّجْشِ وَتَحْرِيمِ التَّصْرِيَةِ:
Chapter: The prohibition of urging a buyer to cancel a purchase in order to sell him one's own goods; And urging a seller to cancel a sale already agreed upon so that one can buy the goods oneself; And the prohibition of artificially inflating prices; And the prohibition of letting milk accumulate in the udder in order to deceive the purchaser
Hadith 1515
This hadith is listed as number 3813 in Maktaba Shamila
حَدَّثَنَا يَحْيَي بْنُ أَيُّوبَ ، وَقُتَيْبَةُ بْنُ سَعِيدٍ ، وَابْنُ حُجْرٍ ، قَالُوا : حَدَّثَنَا إِسْمَاعِيلُ وَهُوَ ابْنُ جَعْفَرٍ ، عَنْ الْعَلَاءِ ، عَنْ أَبِيهِ ، عَنْ أَبِي هُرَيْرَةَ : أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، قَالَ : " لَا يَسُمْ الْمُسْلِمُ عَلَى سَوْمِ أَخِيهِ " .
Abu Hurairah (RA) reported Allah's Messenger (ﷺ) as saying: A Muslim should not purchase (in opposition) to his brother.
