Hadith
أَخْبَرَنَا عَبْدُ الرَّحْمَنِ بْنُ عَبْدِ اللَّهِ بْنِ عَبْدِ الْحَكَمِ، قَالَ حَدَّثَنَا شُعَيْبُ بْنُ اللَّيْثِ، عَنْ أَبِيهِ، عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ نَافِعٍ، أَنَّ ابْنَ عُمَرَ، حَدَّثَهُمْ أَنَّهُمْ، كَانُوا يَبْتَاعُونَ الطَّعَامَ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم مِنَ الرُّكْبَانِ فَنَهَاهُمْ أَنْ يَبِيعُوا فِي مَكَانِهِمُ الَّذِي ابْتَاعُوا فِيهِ حَتَّى يَنْقُلُوهُ إِلَى سُوقِ الطَّعَامِ .
It was narrated from Nafi that Ibn 'UMar told them, that:they used to buy foold from the riders at the time of the Messenger of Allah and he forbade them to sell it in the place where they had bought it until they moved it to the food market
Sahih · Abu Ghuddah
Sunan an-Nasa'i 4607 ·Book 44, Hadith 159·Also available on sunnah.com·