A:
If
a person doubts during Ghusl that they have missed some part of their body, they should remove this doubt and pour water all over the body, unless it is Waswasah (insinuating thoughts from Satan), which should be disregarded. However, if this doubt is after having finished Ghusl, it should be disregarded. (Part No. 4; Page No. 144) May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.