Does a person who throws up lose his fasting ?
In the Name of Allah, The Most Merciful, The Most Kind,
In It depends. If the person provoke the vomiting, then the fasting is broken and the day will have to be made up. But, if the vomiting is involuntary, due to an illness, InshaAllah, he can continue with his fasting.
Allah knows best.
Sheikh Mostafa - Imam of Masjid Manhattan