That Abu ad-Darda' narrated to him: The Messenger of Allah (ﷺ) vomited and broke his fast. Then I met Thawban, the client of the Messenger of Allah (ﷺ), in the mosque in Damascus, I said (to him): Abu al-Darda has told me that the Messenger of Allah (ﷺ) vomited and broke his fast. He said: He spoke the truth ; and I poured out water for his ablution (ﷺ).
Sunan Abi Dawud Book 14, Hadith 69