The Book of Transactions
21/5. Chapter:
The prohibition of intercepting traders
Sahih Muslim
حَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا هِشَامُ بْنُ سُلَيْمَانَ، عَنِ ابْنِ جُرَيْجٍ، أَخْبَرَنِي هِشَامٌ، الْقُرْدُوسِيُّ عَنِ ابْنِ سِيرِينَ، قَالَ سَمِعْتُ أَبَا هُرَيْرَةَ، يَقُولُ إِنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " لاَ تَلَقَّوُا الْجَلَبَ . فَمَنْ تَلَقَّاهُ فَاشْتَرَى مِنْهُ فَإِذَا أَتَى سَيِّدُهُ السُّوقَ فَهُوَ بِالْخِيَارِ" .
Abu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying: Do not meet the merchant in the way and enter into business transaction with him, and whoever meets him and buys from him (and in case it is done, see) that when the owner of (merchandise) comes into the market (and finds that he has been paid less price) he has the option (to declare the transaction null and void).
Reference : Sahih Muslim 1519bIn-book reference : Book 21, Hadith 23USC-MSA web (English) reference : Book 10, Hadith 3627