'Abdullah (b. Umar) reported that Allah's Apostle ﷺ forbade Muzabana, i. e. buying of fresh dates (on) the trees for dry dates by measure, and the buying of grapes for raisins by measure and the selling of field of corn for corn by measure.
أَخْبَرَهُ أَنَّ النَّبِيَّ ﷺ نَهَى عَنِ الْمُزَابَنَةِ بَيْعِ ثَمَرِ النَّخْلِ بِالتَّمْرِ كَيْلاً وَبَيْعِ الْعِنَبِ بِالزَّبِيبِ كَيْلاً وَبَيْعِ الزَّرْعِ بِالْحِنْطَةِ كَيْلاً