Question 128: Does taking Ghusl (ritual bath following major ritual impurity) exempt a person from Wudoo’ (ablution), given that the person intends to offer Salaah (Prayer) after Ghusl, or should they perform Wudoo’ besides Ghusl?
Answer: All praise be to Allaah Alone, and peace and blessings be upon His Messenger, and his family and Companions. Yes, Ghusl is enough; it makes up for Wudoo’ if a person intends to do both. They can offer Salaah as long as they do not invalidate their Wudoo’. If they intend to perform Ghusl only, it does not make up for Wudoo’, according to the most correct opinion of scholars. It was authentically reported from the Prophet (peace be upon him) that he said… read more here.