Muwatta Imam Malik Book of General Subjects, Hadith 27

Malik related to me that he heard that the Messenger of Allah ﷺ said, "If there is a remedy that will reach the disease, then cupping will reach it."

وَحَدَّثَنِي مَالِكٌ، أَنَّهُ بَلَغَهُ أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ " إِنْ كَانَ دَوَاءٌ يَبْلُغُ الدَّاءَ فَإِنَّ الْحِجَامَةَ تَبْلُغُهُ " .