Sulayman bin Yasar (may Allah have mercy on him) said that Sayyiduna Abu Hurayrah (may Allah be pleased with him) said to Marwan: You have made bay' al-sukuk (the sale of vouchers) lawful, whereas the Messenger of Allah (peace and blessings be upon him) "forbade selling wheat before it has been measured out." He said: Then Marwan delivered a sermon and forbade that sale. Sulayman bin Yasar (may Allah have mercy on him) said: I saw the guards snatching them from people's hands.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11156