Question: Should women cover their heads when they are sleeping? As far as I’ve heard, angels deliver light during the nights and if their heads are not covered the angels turn back. Is it true?
There is no evidence for a claim like this. There is no command for women to be covered while they are alone or with their husbands. Women can sleep in any clothing they like.
Adolescent women must be covered only within the presence of stranger men and when they are performing prayers.