Sahih al-Bukhari 2185

Arabic

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ، أَخْبَرَنَا مَالِكٌ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ ـ رضى الله عنهما ـ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنِ الْمُزَابَنَةِ‏.‏ وَالْمُزَابَنَةُ اشْتِرَاءُ الثَّمَرِ بِالتَّمْرِ كَيْلاً، وَبَيْعُ الْكَرْمِ بِالزَّبِيبِ كَيْلاً‏.‏

English translation

Narrated `Abdullah bin `Umar:Allah's Messenger (ﷺ) forbade Muzabana; and Muzabana means the selling of fresh dates (on the trees) for dried dates by measure and also the selling of fresh grapes for dried grapes by measure

Reference: Sahih al-Bukhari 2185, Book of Sales and Trade. English translation by Dr. Muhammad Muhsin Khan.