Volume 3, Book 35, Number 451:
Narrated Abu Al-Bakhtari:
I asked Ibn Umar about Salam (the fruits of) date-palms. He replied, “The Prophet forbade the sale
of dates till their benefit becomes evident and fit for eating and also the sale of silver (for gold) on
credit.” I asked Ibn ‘Abbas about Salam for dates and he replied, “The Prophet forbade the sale of
dates till they were fit for eating and could be estimated.”

Volume 3, Book 35, Number 452:
Narrated Abu Al-Bakhtari:
I asked Ibn ‘Umar about Salam for dates. Ibn ‘Umar replied, “The Prophet forbade the sale (the
fruits) of datepalms until they were fit for eating and also forbade the sale of silver for gold on cred –
it.” I also asked Ibn ‘Abbas about it. Ibn ‘Abbas replied, “The Prophet forbade the sale of dates till they
were fit for eating, and could be weighed.” I asked him, “What is to be weighed (as the dates are on
the trees)?” A man sitting by Ibn ‘Abbas said, “It means till they are cut and stored.”