Some people used to buy foodstuff at the head of the market and used to sell it on the spot. Allah's Apostle forbade them to sell it till they brought it to (their) places.
كَانُوا يَبْتَاعُونَ الطَّعَامَ فِي أَعْلَى السُّوقِ فَيَبِيعُونَهُ فِي مَكَانِهِمْ فَنَهَاهُمْ رَسُولُ اللَّهِ ﷺ أَنْ يَبِيعُوهُ فِي مَكَانِهِ حَتَّى يَنْقُلُوهُ