Riyad as-Salihin 17:143

Abu Musa Al-Ash'ari (May Allah be pleased with him) said:

A house in Al-Madinah was burnt with its occupants inside it one night. When this was reported to the Messenger of Allah (ﷺ) he said, "Fire is your enemy. So, put it out before going to bed." [Al-Bukhari and Muslim] .