What is the ruling on repeating ablution multiple times due to obsessive doubts (waswas)? Is it obligatory to wash the feet if water splashes on them during the washing of the private parts for janabah? Is ablution mandatory when performing ghusl? Is ablution valid if there is olive oil on the hands? Is it permissible to bathe in a shared bathroom with an impure floor?

Leave the whispers (waswas) and do not pay attention to them. Do not repeat ablution after finishing it, for the mentioned ghusl (ritual bath) is valid. What is obligatory in ghusl is merely to make the water reach all parts of the body. The water that splashes during ghusl is not impure. Olive oil does not prevent water from reaching the skin, and the default state of the bathroom floor is purity. It is not necessary to purify it unless one is certain of the presence of impurity.