Allah's Messenger (ﷺ) regarded illegal the price of a dog, the earnings of a prostitute, and the charges taken by a soothsayer.
Sahih al-Bukhari Book 37, Hadith 22
← Previous Hadith The Prophet (ﷺ) sent for a slave who had the profession of cupping, and he cupped him. The Prophet (ﷺ) ordered that he be paid one or two Sas, or one or two Mudds of foodstuff, and appealed to his masters to reduce his taxes:

Sahih al-Bukhari Book 37, Hadith 21 Next Hadith → The Prophet (ﷺ) prohibited the earnings of slave girls (through prostitution).

Sahih al-Bukhari Book 37, Hadith 23