Business Transactions
Malik :: Book 31 : Hadith 31.16.32
Yahya related to me from Malik that he had heard from his grandfather, Malik ibn Abi Amir that Uthman ibn Affan said, "The Messenger of Allah, may Allah bless him and grant him peace, said to me, 'Do not sell a dinar for two dinars nor a dirham for two dirhams.' "