Has it been reported that when a believer sleeps in a state of ritual purity (wudu'), their soul prostrates beneath the Throne and angels seek forgiveness for them until they awaken, and what should a menstruating woman or one in a state of ritual impurity (junub) do before sleeping if this is indeed the case?

Souls are presented in dreams before the Throne. Whoever is pure prostrates near the Throne, and whoever is impure prostrates far away, or is not permitted to prostrate.

It is recommended for those in a state of ritual impurity (junub), menstruating women (ha'id), and women in postpartum bleeding (nifas) to perform ablution (wudu) or a ritual bath (ghusl) before sleeping, so that the ruling of major ritual impurity (janaba) is lifted, while the ruling of menstruation remains until the bleeding stops.