عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا قَالَ كُنَّا نَبْتَاعُ الطَّعَامَ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ فَيَبْعَثُ عَلَيْنَا مَنْ يَأْمُرُنَا بِنَقْلِهِ مِنَ الْمَكَانِ الَّذِي ابْتَعْنَاهُ فِيهِ إِلَى مَكَانٍ سِوَاهُ قَبْلَ أَنْ نَبِيعَهُ
It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both), he says: During the time of the Prophet (peace and blessings be upon him), we used to buy grain, and the Prophet (peace and blessings be upon him) would send a man to us who would instruct us that the grain which you have bought at this place, before selling it, take it to another place.