(14) باب تَحْرِيمِ بَيْعِ الرُّطَبِ بِالتَّمْرِ إِلاَّ فِي الْعَرَايَا
Zaid b Thabit (Allah be pleased with him) reported that Allah's Messenger (ﷺ) gave concession in case of al-'ariyya transactions (for exchanging dates) for dates with measure. Yahya said:
'Ariyya implies that a person should buy fresh dates on the tree for his family to eat against a measure of dry dates.
Reference: Sahih Muslim 1539 g
In-book reference: Book 21, Hadith 82
USC-MSA web (English) reference(deprecated numbering scheme): Book 10, Hadith 3683