Be aware and mindful of your sources of income , Do what is right and just even if no one else knows .

This hadith speaks about the importance of knowing the source of income when it comes to slave girls. The Prophet Muhammad ﷺ forbade earning money from a slave girl unless it is known where that money came from. This teaches us that we should be aware and mindful of our sources of income, and not accept any money without knowing its origin or source. It also teaches us to be honest in our dealings, and not take advantage of those who are vulnerable or powerless in society such as slaves or servants. We should always strive to do what is right and just, even if no one else is watching us or knows what we are doing.