Bathing to remove major ritual impurity while covering the private parts during immersion

The questioner:
He says: Honorable Shaykh, may Allah grant you success. Based on the statement of those who say that a person should not expose his private parts while immersing himself, how does he act if he wants to bathe to remove major ritual impurity, given that the water will not reach his private parts?

The Shaykh:
One does not bathe in a small amount of water, my brother. It is not permissible to immerse oneself in a small amount of water. The Prophet (peace and blessings be upon him) forbade bathing in stagnant water that does not flow. Then, if one immerses himself in it, it is not permissible. This is if the water is small. If it is a wide river, or a sea, or a large pool, a large pool, there is no harm. And what is called now, they put them now in the rest houses, large pools for bathing. This is not a problem. Yes.

The presenter:
He says: Honorable Shaykh, may Allah grant you success.

The Shaykh:
They call it a pool, they call it a pool, yes.