The Prophet said, Bathing in a Closed Place
When showering in the bathroom, don’t forget to close the bathroom door.
It’s embarrassing if anyone sees it.
Husna is naked.
Oh yes, there are parts of our body that should not be seen by other people.
That is what is called our private part.
Message of the Prophet Muhammad
Indeed, Allah is Most Shameful and Allah loves shame very much. Therefore, when one of you bathes, he should cover himself from the sight of others.
(HR. Abu Daud)

