This tips is only for the malay people. Have u ever experienced before like someone knock on the door at maghrib and u open the door, there's no one. I have a tips 4 u. Let say if there's someone knock at your door and u look at the door hole, there's no one but still someone knocking at the door, firstly u took a golden coin (eg: 1 dollar, 5 cent.) After that u read ayat kursi on the coin and if there's someone knocking at your door, u open your door a little and quickliy throw the coin outside.(don't went out and look). After u throw, just ignore and walk away. Do not take back the coins that u have just throw. Thanx a lot!!