Do not leave a fire burning in your houses while you are asleep.  

النَّبِيَّ ﷺ لاَ تَتْرُكُوا النَّارَ فِي بُيُوتِكُمْ حِينَ تَنَامُونَ  

A mouse came dragging a wick and dropped before the Messenger of Allah ﷺ on the mat on which he was sitting with the result that it burned a hole in it about the size of dirham. He (the prophet) said: When you go to sleep, extinguish your lamps, for the devil guides a creature like this to do thus and sets you on fire.  

جَاءَتْ فَأْرَةٌ فَأَخَذَتْ تَجُرُّ الْفَتِيلَةَ فَجَاءَتْ بِهَا فَأَلْقَتْهَا بَيْنَ يَدَىْ رَسُولِ اللَّهِ ﷺ عَلَى الْخُمْرَةِ الَّتِي كَانَ قَاعِدًا عَلَيْهَا فَأَحْرَقَتْ مِنْهَا مِثْلَ مَوْضِعِ الدِّرْهَمِ فَقَالَ إِذَا نِمْتُمْ فَأَطْفِئُوا سُرُجَكُمْ فَإِنَّ الشَّيْطَانَ يَدُلُّ مِثْلَ هَذِهِ عَلَى هَذَا فَتَحْرِقَكُمْ