'Ali Radiyallahu 'Anhu reports:
"Rasulullah Sallallahu 'Alayhi Wasallam once took the treatment of cupping and asked me to pay its fees. I paid the hajjaam (cupper) his fees". (AR)
English reference (AR): Book 49, Hadith 344 (AR)
Arabic reference (AR): Book 50, Hadith 361 (AR)