Strengthening the Ummah

I asked Ibn `Umar about Salam for dates. Ibn `Umar replied, "The Prophet (ﷺ) forbade the sale (the fruits)
of date-palms until they were fit for eating and also forbade the sale of silver for gold on credit." I also
asked Ibn `Abbas about it. Ibn `Abbas replied, "The Prophet (ﷺ) 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."