Islam regulates the interactions and transactions between people to preserve their rights, and establish justice in the Muslim community. It sternly warns against unlawful interactions and transactions, urges Muslims to avoid them, and underlines their evil consequences. In this hadeeth, the Prophet ﷺ stated that Allah, Exalted is He, said that there are three categories of people who commit evil deeds warranting His wrath on the Day of Resurrection, and this is a stern warning, because whoever has Allah, Exalted is He, as his opponent will inevitably incur utter loss. The first category is those who make a covenant or swear an oath by the Name of Allah, and then break it. Allah, Exalted is He, commanded Muslims to honor and fulfill their covenants and oaths; He Says (what means): {And fulfill [every] covenant. Indeed, the covenant is ever [that about which one will be] questioned.} [Quran 17:34]. Moreover, the Prophet ﷺ said: “Every perfidious one will have a standard on the day of resurrection by which he will be recognized.” [Al-Bukhaaree and Muslim]. The second category includes those who knowingly sell a free Muslim man as a slave, and consume the earnings, meaning availing oneself of such money. The hadeeth made reference to ‘consumption’ in particular because this is the most fundamental way of availing oneself of the earnings, and the need to satisfy one’s hunger may force a person to commitprohibitions and violations of the Laws of Islam. The sin is grave when a Muslim man knowingly sells a free Muslim man as a slave, because all Muslims are held on an equal standing in terms of inviolability and sanctity, and a Muslim has rights over his fellow Muslims: to support him, refrain from doing injustice to him, be sincere to him, and abstain from handing him over to an oppressor. The worst act of injustice to be done to a fellow Muslim is to enslave him or imperil him to such a fate. Whoever sells a free Muslim as a slave, has deprived him of his right to dispose of what Allah, Exalted is He, has deemed lawful to him and forced him into a life of humiliation and slavery; this is why it is a serious sin. The third category comprises the employers who hire workers to perform certain tasks, and after the work is done, they refuse to pay them the due wages, because such workers had trusted the employers’ honesty. If the employer betrays his trust, Allah, Exalted is He, punishes him Himself, and because the employer availed himself of the worker’s service in return for no compensation; he has unlawfully devoured his wealth. This is one of the worst and most grievous acts of injustice. It is noteworthy that mentioning the three categories in this hadeeth does not mean that Allah, Exalted is He, will not be the opponent of all wrongdoers, but He wanted to lay a special emphasis on these three categories, given the fact that they all share the heinous trait of treachery, being one of the worst, immoral qualities. It is deduced from the hadeeth that Islam declares selling a free person a serious crime and major sin, because such stern warnings are only associated with major sins. It is also inferred therefrom that boldly swearing false oaths, breaking covenants and oaths, and denying a hired worker’s wages are grave sins. .