(14) باب تَحْرِيمِ بَيْعِ الرُّطَبِ بِالتَّمْرِ إِلاَّ فِي الْعَرَايَا
Ibn Umar (Allah be pleased them) reported Allah's Messenger (ﷺ) having forbidden Muzabana, and Muzabana implies the selling of fresh dates for dry dates by measuring them out and the selling of raisins by measure for grapes.
Reference: Sahih Muslim 1542 a
In-book reference: Book 21, Hadith 92
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3693