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)

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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).