Anas Radiyallahu'Anhu was asked regarding the payment to a hajjaam (cupper). (Is it permissible or not?) Anas Radiyallahu 'Anhu replied:
"Rasulullah Sallallahu 'Alayhi Wasallam took the treatment of cupping which was administered by Abu Taybah Radiyallahu 'Anhu, he was given two saa' food (in a narration it is mentioned that dates were given), and Sayyidina Rasulullah Sallallahu'Alayhi Wasallam 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".
English reference: Book 49, Hadith 343
Arabic reference: Book 50, Hadith 360