Does the fast of one who experiences a wet dream during the day of Ramadan become invalid, and is he required to perform ghusl or wudu'?

Question:
He says: Honorable Shaykh, may Allah grant you success, does a fasting person break his fast if he wakes up during the day having experienced a wet dream? And what is obligatory for him if he experiences a wet dream? Is it ghusl or wudu' only?

Answer:
If a person experiences a wet dream and emits semen, it does not invalidate his fast, because it is not by his choice. However, he is required to perform ghusl to remove the state of major ritual impurity (janabah). As for the fast, it is not affected, because this is not by his choice.