Narrated Abu Al-Bakhtari: 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".
The Prophet ﷺ also taught us to weigh goods accurately when trading so that both parties involved in a transaction are satisfied with the outcome and no one is taken advantage of or cheated out of their money or goods. These teachings remind us to always practice fairness when dealing with others and ensure justice prevails in our dealings with each other at all times.