مُوَطَّأُ مَالِكٍ
Muwatta Malik 1350
Business Transactions
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عُثْمَانَ بْنَ عَفَّانَ، كَانَ يَنْهَى عَنِ الْحُكْرَةِ، .
Yahya related to me from Malik that he had heard that Uthman ibn Affan forbade hoarding .
Arabic/English book reference: Book 31, Hadith 58