Reference:: Fataawa Ramadhaan v2 p481 no.424
Question: What is the ruling of one who vomits whilst fasting, does he have to make up his fast or not?
Response: It's ruling is that he does not have to make it up. As for the one who intentionally vomits, then he must make up his fast, as the Prophet ﷺ said:
«One who vomits, then he does not have to make it up, and he who intentionally vomits, then he has to make it up» [transmitted by Abu Daawood no.2380, at-Tirmidhee no.720 and Ibn Maajah no.1676; graded saheeh by al-Albaanee]
Transmitted by Imaam Ahmad and the four Imaams of the Sunan (Aboo Daawood, at-Tirmidhee, an-Nasaa'ee and ibn Maajah) with a Saheeh chain of narration on the authority of Aboo Hurayrah.
