Sleeping in the same room with your mother is permissible but not on the
same bed!
Sleeping in the same bed with your father or brother is permissible providing that there is no other option and you are covering yourself with different blankets.

Sheikh one couple has little bit disagrement about a ruling .that after a boy get adult he can not sleep in the same bed with his father & also included mother .. what is the islamic rulling about this.plz can you answer this ..husbend is saying from a certain distence it is permisabile..what is your opinion