Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: I went to Marwan bin al-Hakam in Madinah. Marwan had declared lawful the sale of sukuk (official vouchers), which have a fixed term, before they were taken into full possession. Sayyiduna Abu Hurayrah (may Allah be pleased with him) said: I said to him: You have made usury (riba) lawful, for wheat is being sold when it has not yet been taken into possession. And I bear witness that I heard the Messenger of Allah (peace and blessings be upon him) say: "Whoever buys wheat should not sell it before measuring it out in full." So Marwan put a stop to that sale.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11155