Allah's Apostle said, "When night falls (or it is evening), keep your children close to you for the devils spread out at that time. But when an hour of the night elapses, you can let them free. Close the door and mention the name of Allah, for Shaytaan (Satan)does not open closed doors."
-Bukhari 4:523, Narrated by Jabir bin Abdullah
-Bukhari 4:523, Narrated by Jabir bin Abdullah