It is narrated from Hazrat Muhayisa bin Mas’ud (may Allah be pleased with him) that he had a slave who was an expert in cupping, whose name was Nafi’ Abu Taybah. He came to the service of the Noble Prophet (peace and blessings be upon him) and asked about the daily earnings of his slave. The Noble Prophet (peace and blessings be upon him) said: Do not go near it at all. He repeated the same question before the Noble Prophet (peace and blessings be upon him), so the Noble Prophet (peace and blessings be upon him) said: Buy fodder for the camel that brings water with it, and feed it to your slave.