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