they used to buy and sell during the time of the Messenger of Allah at the top of the marketplace without measuring. The Messenger of Allah forbade them to sell it in the place where they had bought it until they moved it. (Using translation from Nasāʾī 4606)
عَنِ ابْنِ عُمَرَ أَنَّهُمْ كَانُوا يَتَبَايَعُونَ الطَّعَامَ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ فِي أَعَلَى السُّوقِ جِزَافًا فَنَهَاهُمْ رَسُولُ اللهِ ﷺ أَنْ يَبِيعُوهُ فِي مَكَانِهِ حَتَّى يَنْقُلُوهُ