Anas bin Maalik Radiyallahu 'Anhu reports:
"Sayyidina Rasulullah Sallallahu 'Alayhi Wasallam took treatment of cupping on the back of his leg at Milal (a place about seventeen miles-27 km-from Madinah Munawwarah in the direction of Makkah) while he was in the state of ihraam".
English reference: Book 49, Hadith 348
Arabic reference: Book 50, Hadith 365