It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Prophet Muhammad (peace and blessings be upon him) had cupping done and gave wages to the cupper. (The narrator says that if this was an unlawful profession, the Prophet (peace be upon him) would not have given wages.)
Hadith Referenceالسنن المأثورة / باب في البيوع / 268
Hadith Takhrijصحیح بخاری، البيوع، باب خراج الحجام، رقم: 2279، صحیح مسلم، المساقاة، باب حل أجدۃ الحجام، رقم: 1202