He who buys foodgrain should not sell that before taking possession of it. He (the narrator) said: We used to buy foodgrain from the caravans in bulk, but Messenger of Allah ﷺ forbade us to re-sell that until we had shifted it to some other place.
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ مَنِ اشْتَرَى طَعَامًا فَلاَ يَبِعْهُ حَتَّى يَسْتَوْفِيَهُ قَالَ وَكُنَّا نَشْتَرِي الطَّعَامَ مِنَ الرُّكْبَانِ جِزَافًا فَنَهَانَا رَسُولُ اللَّهِ ﷺ أَنْ نَبِيعَهُ حَتَّى نَنْقُلَهُ مِنْ مَكَانِهِ