حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، قَالَ نَهَى رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ عَنِ الْمُزَابَنَةِ . وَالْمُزَابَنَةُ أَنْ يَبِيعَ الرَّجُلُ تَمْرَ حَائِطِهِ إِنْ كَانَتْ نَخْلاً بِتَمْرٍ كَيْلاً وَإِنْ كَانَتْ كَرْمًا أَنْ يَبِيعَهُ بِزَبِيبٍ كَيْلاً وَإِنْ كَانَتْ زَرْعًا أَنْ يَبِيعَهُ بِكَيْلِ طَعَامٍ نَهَى عَنْ ذَلِكَ كُلِّهِ .
It was narrated that 'Abduilah bin 'Umar said: "The Messenger of Allah (PBUH) forbade the Muzabanah. The Muzdbanah means when a man sells the dates of his grove when they are still on the tree, for a measure of dty dates;[2] or, if it is grapes, he sells them when they are still on the vine, for a measure of raisins; or if it is a crop, he sells it for food, estimating the amount (of the crop in the field). He forbade all of these things." Translation Not Available
Book Ref: Sunan Ibn Majah Book 12 Hadith 2265
Web Ref: Sunan Ibn Majah Vol 3 Book 12 Hadith 2265