Mishkat al-Masabih #2716

Ibn ‘Umar said that God’s Messenger forbade muzabana, which means that a man sells the fruit of his garden, if it consists of palm trees*, for dried dates by measure; or if it consists of grapes, for raisins by measure; or (Muslim has “and if”) it is corn, he sells it for a measure of corn. He forbade all that. A version by both of them tells that he forbade muzabana, which means that the fruit on the palm-trees is sold for a specified measure of dates, the seller profiting if it is greater and losing if it is less. (Bukhari and Muslim.) * Explained as meaning fresh dates