I saw the people buy foodstuff randomly (i.e. blindly without measuring it) in the lifetime of Allah's Apostle and they were punished (by beating), if they tried to sell it before carrying it to their own houses.  

لَقَدْ رَأَيْتُ النَّاسَ فِي عَهْدِ رَسُولِ اللَّهِ ﷺ يَبْتَاعُونَ جِزَافًا يَعْنِي الطَّعَامَ يُضْرَبُونَ أَنْ يَبِيعُوهُ فِي مَكَانِهِمْ حَتَّى يُؤْوُوهُ إِلَى رِحَالِهِمْ