It was narrated from'Amr bin Shu'aib, from his father that his grandfather, Said:that the Messenger of Allah said: "It is not permissible to lend on the condition of a sale, or to have two conditions in one transaction, or to sell what you do not have." (Sahih)
Hasan SahihHasan SahihIsnaad SahihBook 44 · Hadith 163