I saw your reply to one of the question- protection from jinns in one point you’ve mentioned to write ayatul kursi and hang it on the wall of every room, I want to ask that we have to write it ourself? Can we not hang the one which we have brought from outside/online (which has already written ayatul kursi on it)

You can hang the one you get from online, but it’s more effective to have someone in the house write it (while on wudhu).