Ahmad recorded from him, in one narration, these words: I came to the Prophet (peace and blessings be upon him) to call him to the prayer, and he intended to fast. He drank water, then passed the vessel to me, and then went out to the prayer. The narrators of both these reports are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصيام / 4855