Anas (may Allah be pleased with him) was asked regarding the payment to a hajjaam (cupper). (Is it permissible or not?) Anas (may Allah be pleased with him) replied:
"Messenger of Allah ﷺ took the treatment of cupping which was administered by Abu Taybah (may Allah be pleased with him), he was given two saa' food (in a narration it is mentioned that dates were given), and Messenger of Allah ﷺ interceded on his behalf to his master that the stipulated amount he was responsible for be made less. He also said this, that cupping is the best of medicine".
حَدَّثَنَا عَلِيُّ بْنُ حُجْرٍ، قَالَ: حَدَّثَنَا إِسْمَاعِيلُ بْنُ جَعْفَرٍ، عَنْ حُمَيْدٍ، قَالَ: سُئِلَ أَنَسُ بْنُ مَالِكٍ عَنْ كَسْبِ الْحَجَّامِ، فَقَالَ: احْتَجَمَ رَسُولُ اللهِ ﷺ، حَجَمَهُ أَبُو طَيْبَةَ، فَأَمَرَ لَهُ بِصَاعَيْنِ مِنْ طَعَامٍ، وَكَلَّمَ أَهْلَهُ فَوَضَعُوا عَنْهُ مِنْ خَرَاجِهِ، وَقَالَ: إِنَّ أَفْضَلَ مَا تَدَاوَيْتَمْ بِهِ الْحِجَامَةُ، أَوْ إِنَّ مِنْ أَمْثَلِ دَوَائِكُمُ الْحِجَامَةَ.