ENOfficial
Ibn 'Umar (Allah be pleased with them) reported that they were beaten during the lifetime of Allah's Messenger (ﷺ) if they had bought foodgrains in bulk and then sold them in the spot without shifting them (to some other place).
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ مَعْمَرٍ، عَنِ الزُّهْرِيِّ، عَنْ سَالِمٍ، عَنِ ابْنِ عُمَرَ، أَنَّهُمْ كَانُوا يُضْرَبُونَ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم إِذَا اشْتَرَوْا طَعَامًا جِزَافًا أَنْ يَبِيعُوهُ فِي مَكَانِهِ حَتَّى يُحَوِّلُوهُ .
sunnah.com