The prohibition of selling fresh dates in exchange for dry dates except in the case of 'Araya Sahih Muslim 1539 b
Translation
Sa'id b. al-Musayyib said that Allah's Messenger (ﷺ) forbade the transaction of Af Muzabana and Muhaqala. Muzabana means that fresh dates on the trees should be sold against dry dates. Muhaqala implies that the wheat in the ear should be sold against the wheat and getting the land on rent for the wheat (produced in it). He (the narrator) said that the Prophet (ﷺ) had aid
Salim said: Abdullah informed me on the authority of Zaid b. Thabit, Allah's Messenger (ﷺ) having given concession afterwards in case of ariyya transactions by which dry dates can be exchanged with fresh dates, but he did not permit it in other cases.