The method of performing Ghusl
Sometimes for Salat and other acts that require Wudhu, a Ghusl too becomes Wajib.
To perform Ghusl, the complete body, including the head and the neck must be washed. Sometimes a Ghusl becomes Wajib, for example in the case of Janabat; and sometimes it is Mustahab, such as the Ghusl on Friday (Jumu'ah).
In reality, there is no difference in the...