" فِرَاشٌ لِلرَّجُلِ وَفِرَاشٌ لأَهْلِهِ وَالثَّالِثُ لِلضَّيْفِ وَالرَّابِعُ لِلشَّيْطَانِ "
It was narrated from Jabir bin 'Abdullah that the Messenger of Allah said: "A bed for a man, a bed for his wife, a third for his guest and the fourth is for the Shaitan."