When night falls [i.e., at 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.'

Reference: Bukhari: 5623