What is the ruling on vomiting during prayer?

Vomiting does not nullify ablution (wudu'), whether it is copious or slight. If a person praying is overcome by vomiting, and it is slight, he should wipe it away and continue his prayer. However, if it is copious or impure (having changed from the state of food), he must exit the prayer and resume it. If one is overcome by vomiting, his prayer is not invalidated if it is pure, slight, and came out involuntarily.