Narrated Ibn Muhayyisah of Banu Harithah: 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." There are narrations on this topic from Rafi' bin Khadij, Abu Juhaifah, Jabir, and As-Sa'ib bin Yazid. The Hadith of Muhayyisah is a Hasan Sahih Hadith. This is acted upon according to some of the people of knowledge. Ahmad said: "If I am asked for something by cupper then I deny him, acting upon this Hadith."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا قُتَيْبَةُ، عَنْ مَالِكِ بْنِ أَنَسٍ، عَنِ ابْنِ شِهَابٍ، عَنِ ابْنِ مُحَيِّصَةَ، أَخِي بَنِي حَارِثَةَ عَنْ أَبِيهِ، أَنَّهُ اسْتَأْذَنَ النَّبِيَّ صلى الله عليه وسلم 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 . قَالَ أَبُو عِيسَى حَدِيثُ مُحَيِّصَةَ حَدِيثٌ حَسَنٌ . وَالْعَمَلُ عَلَى هَذَا عِنْدَ بَعْضِ أَهْلِ الْعِلْمِ . وَقَالَ أَحْمَدُ إِنْ سَأَلَنِي حَجَّامٌ نَهَيْتُهُ وَآخُذُ بِهَذَا الْحَدِيثِ .
sunnah.com