Sahih Muslim Book - 21, Hadith - 3894

حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِى شَيْبَةَ وَمُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ قَالاَ حَدَّثَنَا مُحَمَّدُ بْنُ بِشْرٍ حَدَّثَنَا عُبَيْدُ اللَّهِ عَنْ نَافِعٍ أَنَّ عَبْدَ اللَّهِ أَخْبَرَهُ أَنَّ النَّبِىَّ -صلى الله عليه وسلم- نَهَى عَنِ الْمُزَابَنَةِ بَيْعِ ثَمَرِ النَّخْلِ بِالتَّمْرِ كَيْلاً وَبَيْعِ الْعِنَبِ بِالزَّبِيبِ كَيْلاً وَبَيْعِ الزَّرْعِ بِالْحِنْطَةِ كَيْلاً.

It was narrated from Nafi' that 'Abdullah told him that the Prophet (s.a.w) forbade Muzabanah. Muzabanah means selling the produce of palm trees for dried dates by measure, or selling grapes for raisins by measure, or selling crops for dried wheat by measure.