The Prophet ﷺ called for Abu Taybah, who cupped him. He then asked him, "How much is your tax?"He replied, "Three saa."So he reduced one saa from it.
دعا النبي ﷺ أبا طيبة فحجمه قال: فسأله كم ضريبتك؟ قال: ثلاثة أصع. قال: فوضع عنه صاعا.
Ahmad (14809) and Abu Yaala (1777) both narrated it via Abu Awana, who said, Abu Bishr Jafar bin Abu Wahshiya narrated to us, from Sulayman bin Qays, from Jabir bin Abdullah, and he related it.Ibn Hibban narrated it in his Sahih (3536) through another route from Abu Zubayr, from Jabir bin Abdullah, that the Prophet ﷺ ordered Abu Taybah to come to him as the sun was setting, and instructed him to apply the cupping instruments at the time the fasting person breaks his fast. So he cupped him, then the Prophet asked him, "How much is your fee?" He said, "Two saa." So the Prophet ﷺ waived one saa for him.On this subject there is also what has been related from Ibn Umar, that the Prophet ﷺ called for a cupper, who cupped him, and he asked him, "How much is your fee?" He said, "Three saa." He said, so he waived one saa for him and gave him his payment. Tirmidhi narrated it in Shamail (357) from Harun bin Ishaq, who said, Abdah narrated to us, from Ibn Abu Layla, from Nafi, from Ibn Umar, and he related it. Ibn Abu Layla is Muhammad bin Abdul-Rahman bin Abu Layla, the Ansari, the Kufan, who is daif according to the majority of the scholars.The jurisprudence of this chapter.The hadiths of this chapter indicate that the cupper's fee is not forbidden, and that its impurity stems from the lowliness of its source. For this reason, the prohibition against it is understood as a matter of refinement, because of its lowliness. It also contains an encouragement to purify one's earnings toward what is more wholesome and better, since some forms of earning are higher and finer, while others are lower and coarser. This was noted by Khattabi in Maalim, though I have summarized it, because some of what he says requires further examination.The majority of scholars have held that the prohibition against the cupper's earnings is abrogated by the hadiths of this chapter, whether or not it was stipulated as a condition. Thus it is permissible for the cupper to take a fee for his work, if this is his profession, whereas for someone for whom this is not his profession, refraining from it is better.