Vomiting while fasting
Question: If someone vomits involuntarily while fasting, what is the ruling? Must he make up that fast or not?
Answer: If a person vomits involuntarily while fasting, there is no need to make up the fast. However, if someone vomits deliberately, he must make up that fast, because the Prophet ﷺ said:
“Whoever vomits involuntarily, there is no make-up upon him, and whoever vomits deliberately, there is make-up upon him.”
This hadith has been narrated by Imam Ahmad and the authors of the four Sunan, through the route of Abu Hurairah (may Allah be pleased with him), with a sahih chain.