عَنْ سَالِمٍ عَنْ أَبِيهِ رَضِيَ اللَّهُ عَنْهُمَا أَنَّهُمْ كَانُوا يُضْرَبُونَ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ إِذَا اشْتَرَوْا طَعَامًا جُزَافًا أَنْ يَبِيعُوهُ فِي مَكَانِهِ حَتَّى يُؤْوُوهُ إِلَى رِحَالِهِمْ
Salim narrates from his father, Sayyiduna Abdullah bin Umar (may Allah be pleased with them), who says that those people who used to buy grain by estimation during the Prophetic era were punished for starting to sell it at the same place, (and it was ordered) that they should first transfer it to their homes.