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‘When night falls (i.e. Al-Maghrib), restrain your children (from going out) because at such time the devils spread about.  After a period of time has passed, let them be.  Shut your doors and mention Allah’s name, for verily the devil does not open a shut door, tie up your water-skins and mention Allah’s name, cover your vessels with anything and mention Allah’s name and put out your lamps.’