It is narrated from Sayyiduna Rafi' bin Khadij (may Allah be pleased with him): "The Messenger of Allah (peace and blessings be upon him) forbade muhaqalah, muzabanah and munabadhah, and he forbade a man to say to another: Buy this for cash and sell it (on) on credit, until he has (first) bought it and taken it into his possession. He (peace and blessings be upon him) also forbade the sale of kali' for kali' (a deferred debt for a deferred debt) and a debt for a debt."
Hadith Referenceالمعجم الكبير للطبراني / باب الراء / 4360