عَنْ أَبِي مُوسَى الْأَشْعَرِيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ احْتَرَقَ بَيْتٌ بِالْمَدِينَةِ عَلَى أَهْلِهِ فَحُدِّثَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ بِشَأْنِهِمْ فَقَالَ إِنَّمَا هَذِهِ النَّارُ عَدُوٌّ لَكُمْ فَإِذَا نِمْتُمْ فَأَطْفِئُوهَا عَنْكُمْ
It is narrated from Sayyiduna Abu Musa Ash'ari (may Allah be pleased with him) that a house in Madinah Munawwarah burned down along with its owners. When the Messenger of Allah (peace and blessings be upon him) was informed of their situation, he said: "This fire is your enemy, so when you go to sleep, extinguish it."