Abu Amir al-Muzani said that a shaykh from Banu Tamim told us that Sayyiduna Ali (may Allah be pleased with him) addressed us and said: "A time will come upon the people when the wicked will be given precedence, and the one in desperate need will be made to sell," although the Messenger of Allah (peace and blessings be upon him) forbade "the sale of one in desperate need, the sale involving deception (gharar), and the sale of fruit before it is ripe."
This has been narrated through several routes from Ali and Ibn Umar, and none of them is strong.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11077