'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". (TR)
English reference (TR): Book 49, Hadith 344 (TR)
Arabic reference (TR): Book 50, Hadith 361 (TR)