Weak
graded by Salim al-Hilali
Muwatta Malik 1792
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 remedy that will reach the disease, then cupping will reach it."
Reported by Malik (No. 1792).