The Book of Transactions (Kitab Al-Buyu`)

Muslim :: Book 10 : Hadith 3693

Ibn Umar (Allah be pleased them) reported Allah's Messenger (may peace be upon him) having forbidden Muzabana, and Muzabana implies the selling of fresh dates for dry dates by measuring them out and the selling of raisins by measure for grapes.

Source materials are from the University of Southern California MSA site
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