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] "He asked the Prophet ﷺ about the profession of cupping. He prohibited him from it. He asked him again and he prohibited him again. Then he mentioned his need and the Prophet ﷺ said, 'Shave your hair and feed the poor.'"  

أَنَّهُ سَأَلَ النَّبِيَّ ﷺ عَنْ كَسْبِ الْحَجَّامِ؟ فَنَهَاهُ فَأَعَادَ عَلَيْهِ فَنَهَاهُ فَذَكَرَ مِنْ حَاجَتِهِ فَقَالَ اعْلِفْ نَاضِحَكَ وَأَطْعِمْهُ رَقِيقَكَ  

[Machine] That Muhyissa asked the Prophet ﷺ about the income of the cupping practitioner, so he forbade him from it, but he continued talking to him until he said, "Feed your camel with your thin food and water it with your fresh water."  

أَنَّ مُحَيِّصَةَ ؓ سَأَلَ النَّبِيَّ ﷺ عَنْ كَسْبِ الْحَجَّامِ فَنَهَاهُ عَنْهُ فَلَمْ يَزَلْ يُكَلِّمُهُ حَتَّى قَالَ أَطْعِمْهُ رَقِيقَكَ وَاعْلِفْهُ نَاضِحَكَ