Muwatta Imam Malik Book of Business Transactions, Hadith 58
Yahya related to me from Malik that he had heard that Uthman ibn Affan forbade hoarding .
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عُثْمَانَ بْنَ عَفَّانَ، كَانَ يَنْهَى عَنِ الْحُكْرَةِ، .