Sahih Muslim
The Book of Transactions (Kitab Al-Buyu)
Book Number: 010 / Hadith Number: 3683
Zaid b Thabit (Allah be pleased with him) reported that Allah's Messenger (may peace be upon him) 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.