Sorry, i was a bit short there.
In Islam you should not pronounce any attributes of God, Holy names/words or phrases in the bathroom, that is the toilet or rest room. To prevent all of this you shouldn't even talk in the restroom, just get on with it and leave.
And you shouldn't really write down holy words on paper unless you will keep them safe and not discard them. You aren't allowed to throw them away either.
This was probably taken from Jewish teaching, was it not?