(3) باب فِي كَسْبِ الْحَجَّامِ
Narrated Muhayyisah ibn Ka'b:
Muhayyisah asked permission of the Messenger of Allah (ﷺ) regarding hire of the cupper, but he forbade him. He kept on asking his permission, and at last he said to him: Feed your watering camel with it and feed your slave with it.
Reference: Sunan Abi Dawud 3422
In-book reference: Book 24, Hadith 7
English translation: Book 23, Hadith 3415