Trade fairly and justly with others without taking advantage of their misfortune or bad luck .

This hadith teaches us that it is wrong to take advantage of someone else's misfortune. The Prophet Muhammad ﷺ was teaching his companions about trading and how it should be done in a fair and just manner. He said that if you were to sell dried dates to your brother, and they were smitten by blight, then it would not be allowed for you to take your brother's property unjustly. This means that even if the dates are damaged or spoiled, the seller cannot ask for more money than what was agreed upon before the sale took place. We must always remember this lesson when we are trading with others; we should never try to take advantage of their misfortune or bad luck.