Messenger of Allah ﷺ 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 doors and mention the Name of Allah, for Satan does not open a closed door."  

قَالَ رَسُولُ اللَّهِ ﷺ إِذَا كَانَ جُنْحُ اللَّيْلِ أَوْ أَمْسَيْتُمْ فَكُفُّوا صِبْيَانَكُمْ فَإِنَّ الشَّيَاطِينَ تَنْتَشِرُ حِينَئِذٍ فَإِذَا ذَهَبَ سَاعَةٌ مِنَ اللَّيْلِ فَحُلُّوهُمْ وَأَغْلِقُوا الأَبْوَابَ وَاذْكُرُوا اسْمَ اللَّهِ فَإِنَّ الشَّيْطَانَ لاَ يَفْتَحُ بَابًا مُغْلَقًا قَالَ وَأَخْبَرَنِي عَمْرُو بْنُ دِينَارٍ سَمِعَ جَابِرَ بْنَ عَبْدِ اللَّهِ نَحْوَ مَا أَخْبَرَنِي عَطَاءٌ وَلَمْ يَذْكُرْ وَاذْكُرُوا اسْمَ اللَّهِ  

The Prophet ﷺ said, "Do not keep the fire burning in your houses when you go to bed."  

عَنِ النَّبِيِّ ﷺ قَالَ {لاَ تَتْرُكُوا النَّارَ فِي بُيُوتِكُمْ حِينَ تَنَامُونَ}  

One night a house in Medina was burnt with its occupants. The Prophet ﷺ spoke about them, saying, "This fire is indeed your enemy, so whenever you go to bed, put it out to protect yourselves."  

احْتَرَقَ بَيْتٌ بِالْمَدِينَةِ عَلَى أَهْلِهِ مِنَ اللَّيْلِ فَحُدِّثَ بِشَأْنِهِمُ النَّبِيُّ ﷺ قَالَ إِنَّ هَذِهِ النَّارَ إِنَّمَا هِيَ عَدُوٌّ لَكُمْ فَإِذَا نِمْتُمْ فَأَطْفِئُوهَا عَنْكُمْ