Avoid engaging in any activity that involves taking money from prohibited sources such as blood, dogs or prostitutes for personal gain .

This hadith is about what is forbidden in terms of earnings. The Prophet Muhammad ﷺ forbade taking the price of blood, a dog, and the earnings of a prostitute. He also cursed those who take or give usury and those who tattoo or get themselves tattooed as well as picture-makers. Taking money from any of these sources is considered wrong according to Islamic teachings because it involves exploiting people for personal gain which goes against Islamic values such as justice and fairness. Furthermore, it can lead to other immoral activities such as gambling which are also forbidden in Islam. Therefore, Muslims should avoid engaging in any activity that involves taking money from these sources in order to stay true to their faith.