Sahih al-Bukhari 2187
Sahih al-Bukhari · Book 34: Sales and Trade · The sale called Al-Muzabana; which is the sale of dried dates for fresh ones (that are still on the trees), and dried grapes for fresh grapes and the sale called Al-‘Araya (i.e., the selling of ripe fresh date, still over the palms, by means of estimation, for dry dates).
Narrated Ibn `Abbas:
حَدَّثَنَا مُسَدَّدٌ ، حَدَّثَنَا أَبُو مُعَاوِيَةَ ، عَنِ الشَّيْبَانِيِّ ، عَنْ عِكْرِمَةَ ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ نَهَى النَّبِيُّ صلى الله عليه وسلم عَنِ الْمُحَاقَلَةِ وَالْمُزَابَنَةِ.
The Prophet (ﷺ) forbade Muzabana and Muhaqala.