Sahih Bukhari
Sahih Bukhari Volume 003, Book 031, Hadith Number 161.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 31. Fasting
Narated By Thabit Al-Bunani : Anas bin Malik was asked whether they disliked the cupping for a fasting person. He replied in the negative and said, "Only if it causes weakness."