Shahr bin Hawshab narrates from Sayyiduna Bilal (may Allah be pleased with him). Bilal (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "The one who performs cupping and the one who is cupped have both broken their fast."
Hadith Referenceالمعجم الكبير للطبراني / باب الباء / 1118