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  

"A house burned down in Al-Madinah, with its occupants inside. The Prophet ﷺ was told of what had happened, and he said: 'This fire is an enemy to you. When you go to sleep, extinguish it.'"  

احْتَرَقَ بَيْتٌ بِالْمَدِينَةِ عَلَى أَهْلِهِ فَحُدِّثَ النَّبِيُّ ﷺ بِشَأْنِهِمْ فَقَالَ إِنَّمَا هَذِهِ النَّارُ عَدُوٌّ لَكُمْ فَإِذَا نِمْتُمْ فَأَطْفِئُوهَا عَنْكُمْ  

"A house burned down in Al-Madinah, with its occupants inside. The Prophet ﷺ was told of what had happened, and he said: 'This fire is an enemy to you. When you go to sleep, extinguish it.'" (Using translation from Ibn Mājah 3770)  

وَقَالَ احْتَرَقَ بَيْتٌ بِالْمَدِينَةِ عَلَى أَهْلِهِ فَحُدِّثَ النَّبِيُّ ﷺ بِشَأْنِهِمْ فَقَالَ إِنَّمَا هَذِهِ النَّارُ عَدُوٌّ لَكُمْ فَإِذَا نِمْتُمْ فَأَطْفِئُوهَا عَنْكُمْ  

Abu Musa reported that a house was burnt down in Medina during the night over its inhabitants. When their matter was reported to Messenger of Allah ﷺ, he said; This fire is an enemy of yours. So when you go to sleep, extinguish it. (Using translation from Muslim 2016)  

احْتَرَقَ بَيْتٌ بِالْمَدِينَةِ عَلَى أَهْلِهِ مِنَ اللَّيْلِ فَلَمَّا حُدِّثَ رَسُولُ اللَّهِ ﷺ بِشَأْنِهِمْ قَالَ ﷺ «إِنَّ هَذِهِ النَّارَ إِنَّمَا هِيَ عَدُوُّكُمْ فَإِذَا نِمْتُمْ فَأَطْفِئُوهَا عَنْكُمْ»  

"إِنَّ هذه النَّارَ إِنَّمَا هِى عَدُوٌّ لَكُمْ فإذا نِمتُم فأَطفِئُوها عَنْكُم".