Ibn ‘Umar (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "Do not keep the fire burning in your homes when you go to bed." [Al-Bukhari]
عن ابن عمر -ما- مرفوعاً: «لا تَتْرُكُوا النار في بيوتكم حين تنامون». (البخاري)