Chapter 35: Sales in which a Price is paid for Goods to be Delivered Later (As-Salam)
Narrated Abu Bakhtari at-Tai: I asked Ibn 'Abbas about Salam for (the fruits of) date-palms. He replied "The Prophet (ﷺ) forbade the
sale a dates on the trees till they became fit for eating and could be weighed." A man asked what to be
weighed (as the dates were still on the trees). Another man sitting beside Ibn 'Abbas replied, "Till they
are cut and stored." Narrated Abu Al-Bakhtari: I heard Ibn 'Abbas (saying) that the Prophet (ﷺ) forbade...
etc. as above.
Sahih al-Bukhari 2246