It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) used to say: Do not buy or sell fruit until it ripens. This prohibition is for both the seller and the buyer. Also, the Prophet (peace and blessings be upon him) forbade the sale of Muzabana, which means that a person sells the fruit of his garden—if it is dates, then in exchange for measured dried dates; if it is grapes, then in exchange for measured raisins; if it is crops, then in exchange for a specified measure. The Prophet (peace and blessings be upon him) forbade all these things.