The Prophet, peace be upon him and his progeny, said to us: "Cover your utensils and put a lid over the vessels from which you drink, and shut your doors tight, and tie down your herds, and send your family members indoors, as the sun sets till when the darkness of Isha is dispelled. Surely, the devils do not open the covers, nor do they undo the lids. And the devils are sent off when the sun sets. And put off your lamps, for sometimes the rats kindle fire from it setting the whole house on fire, on its inmates."