Sayyiduna Usamah bin Zayd (may Allah be pleased with him) reports that the Prophet (peace and blessings be upon him) said: "The fast of the one who cups and the one who is cupped is broken."
Ahmad and al-Bazzar recorded it. The narrator al-Hasan is a mudallis (one who conceals defects in the chain), and according to one view he did not hear from Sayyiduna Usamah (may Allah be pleased with him).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصيام / 4981
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخرجه احمد فى المسند (210/5) اخرجه البزار فى المسند (997) ، أخرجه مسند أحمد برقم: 21319، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 2314»