It is narrated from Sayyiduna Shaddad bin Aws (may Allah be pleased with him); he said: The Prophet (peace and blessings be upon him) passed by Ma'qil bin Yasar (may Allah be pleased with him) in the month of Ramadan while he was being cupped, and he (peace and blessings be upon him) said: "The one who cups and the one who is cupped have both broken their fast."
Hadith Referenceالمعجم الكبير للطبراني / باب الشين / 7099