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.  

أَنَّهُ اسْتَأْذَنَ رَسُولَ اللَّهِ ﷺ فِي إِجَارَةِ الْحَجَّامِ فَنَهَاهُ عَنْهَا فَلَمْ يَزَلْ يَسْأَلُهُ وَيَسْتَأْذِنُهُ حَتَّى أَمَرَهُ أَنِ اعْلِفْهُ نَاضِحَكَ وَرَقِيقَكَ  

From his father, that he sought permission from the Prophet ﷺ to take the wages for cupping and he ﷺ forbade him from it. He continued asking him and seeking his permission until he said: "Use it to give fodder to your water-carrying camels, and to feed your slaves." [He said:] There are narrations on this topic from Rafi' bin Khadij, Abu Juhaifah, Jabir, and As-Sa'ib bin Yazid.  

أَنَّهُ اسْتَأْذَنَ النَّبِيَّ ﷺ فِي إِجَارَةِ الْحَجَّامِ فَنَهَاهُ عَنْهَا فَلَمْ يَزَلْ يَسْأَلُهُ وَيَسْتَأْذِنُهُ حَتَّى قَالَ اعْلِفْهُ نَاضِحَكَ وَأَطْعِمْهُ رَقِيقَكَ قَالَ وَفِي الْبَابِ عَنْ رَافِعِ بْنِ خَدِيجٍ وَأَبِي جُحَيْفَةَ وَجَابِرٍ وَالسَّائِبِ بْنِ يَزِيدَ  

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. (Using translation from Abū Dāʾūd 3422)   

أَنَّهُ اسْتَأْذَنَ رَسُولَ اللهِ ﷺ فِي إِجَارَةِ الْحَجَّامِ فَنَهَاهُ عَنْهَا فَلَمْ يَزَلْ يَسْأَلْهُ فِيهَا حَتَّى قَالَ لَهُ اعْلِفْهُ نَاضِحَكَ وَأَطْعِمْهُ رَقِيقَكَ  

[Machine] His father sought permission from the Prophet Muhammad ﷺ regarding the payment of Zakat on behalf of a person who performs cupping (Hijama), but the Prophet refused to grant him permission. He continued persisting until the Prophet finally said, "Feed him from your own food and provide him with your own clothing."  

أَنَّ أَبَاهُ اسْتَأْذَنَ رَسُولَ اللَّهِ ﷺ فِي خَرَاجِ الْحَجَّامِ فَأَبَى أَنْ يَأْذَنَ لَهُ فَلَمْ يَزَلْ بِهِ حَتَّى قَالَ «أَطْعِمْهُ رَقِيقَكَ وَأَعْلِفْهُ نَاضِحَكَ»