Narrated Abu Al-Bakhtari: I asked Ibn `Umar about Salam for dates. Ibn `Umar replied, The Prophet 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 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.