Allah has made what is good lawful for His slaves and has made unlawful for them whatever is evil from among food, drink, gains, trade, etc. Shariah has also urged Muslims to have self-esteem and to look down on lowly things. In this Hadīth, the Prophet (may Allah's peace and blessings be upon him) said: "The price of a sold dog is evil," i.e., unlawful. This means that the price of selling or buying it or what is earned from that is ill-gotten money because it is prohibited to own or raise dogs except for dogs that are used in guarding livestock or farming. It is said: This is a general ruling, whether it is trained to hunt or untrained, and whether it is permissible to keep it or not. It is also said: The dog used in guarding and hunting is an exception because it is useful, as mentioned in the Sunan At-Tirmidhi Collection from the Hadīth of Abu Hurayrah (may Allah be pleased with him): "Except for the hunting dog." The version of Ad-Dāraqutni reads: "Except for the dog trained to hunt," which is the one accustomed to hunting. It is as if the Prophet (may Allah's peace and blessings be upon him) forbade the price of the dog except for the dog that is permitted to be kept for a certain benefit, or perhaps the prohibition of the dog's price was at the beginning of Islam. Then it was abrogated later, and it became permissible to use it in hunting and, thus became like all the birds of prey in terms of the permissibility of selling it. Likewise, the money the adulteress takes in return for adultery and for giving herself to a foreign man is unlawful because adultery is unlawful, and the money gained therefrom is unlawful. The Prophet (may Allah's peace and blessings be upon him) called it "dowry" because it takes the form of a dowry, as it is paid in return for being allowed by the woman to have intercourse with her. In the pre-Islamic era of ignorance, they used to force their slave girls to commit adultery and take it as a means of earning money. But Islam criticized this, as Allah Almighty says: {Do not compel your slave girls into prostitution – if they wish to keep chaste – seeking the worldly gains of this life. But if anyone compels them, then Allah, after such a compulsion, is All-Forgiving, Most Merciful.} [Surat an-Nūr: 33] "And the earnings of a cupper are evil." "Hajjām" (cupper) is the one making Hijāmah (cupping), which means drawing blood from veins and removing the bad blood from the body. Being an evil earning does not mean it is unlawful because the Prophet (may Allah's peace and blessings be upon him) had Hijāmah made for him and he paid the cupper a fee, as mentioned in the Two Sahīh Collections from the Hadīth of Ibn ‘Abbās (may Allah be pleased with him and his father). Had it been unlawful, the Prophet (may Allah's peace and blessings be upon him) would not have given him. So, the Hadīths that forbid the cupper's earnings and clearly state that they are evil are interpreted in the sense of encouraging the act of keeping away from and rising above this means of earning and promoting good morals and noble things. Or perhaps the prohibition was at the beginning of Islam, then it was abrogated. So, when he gave the cupper his fee, this abrogated the previous ruling..