Immersing One’s Head in Water Invalidates the Fast
Issue No. 1365- A person who is fasting should not, as an obligatory precaution, immerse his entire head intentionally in water, even if the rest of the body remains out of water. But if the entire body and a part of the head are in water and the other part of the head remains out of water, it does not invalidate the fast. The same ruling applies to immersing the head in other liquids such as rose water and other mixed waters.
