Malik related to me from al-Ala ibn Abd ar-Rahman from his fatherfrom his father that Uthman ibn Affan gave him some money as qirad touse provided the profit was shared between them. (RU)
USC-MSA web (English) reference: Book 32, Hadith 2 (RU)
Arabic reference (RU): Book 32, Hadith 1390 (RU)