Explanation

The Prophet (may Allah's peace and blessings be upon him) informs us about three types of sinners who will receive the severest punishment because of the hideousness of their crimes. One of them is the elderly person who commits fornication, because the urge to commit that sin is weak given his old age. This shows that the reason he is committing fornication is his love of sin and vice. Although fornication is despised regardless of who commits it, it is even more despised in old age. The second is a poor person who treats people with arrogance. Although arrogance is a despicable trait regardless of who displays it, the poor person has no wealth that prompts him to be arrogant, so his arrogance along with the absence of a motive for it proves that arrogance is in his nature. The third is the person who makes swearing by Allah his habit and uses it frequently when selling and buying, thus being disrespectful to the name of Allah and using it as a means to earn money.