Sayyiduna Anas (may Allah be pleased with him) narrates: Abu Taybah passed by us (the narrator says: I think the narration also contains these words: he passed by us after Asr in the month of Ramadan) and he told us: "I have cupped the Messenger of Allah."
Al-Bazzar recorded it.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصيام / 4996