وَحَدَّثَنِي مَالِكٌ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ إِنْ كَانَ دَوَاءٌ يَبْلُغُ الدَّاءَ فَإِنَّ الْحِجَامَةَ تَبْلُغُهُ ‏"‏ ‏.‏

Malik related to me that he heard that the Messenger of Allah,may Allah bless him and grant him peace, said, "If there is a remedythat will reach the disease, then cupping will reach it." Translation Not Available

Book Ref: Muwatta Imam Malik Book 54 Hadith 1792
Web Ref:  Muwatta Imam Malik Book 54 Hadith 27